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Premium Marine Quality Parts

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Groco Hthc-S #316 Ss Hose Thru-Hull 90 Degree With Bronze Nut - Hthc-1000-S - 34-Hthc1000Sf1

Groco, Thru-Hulls & Seacocks
$96.49

Includes locknut.

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Groco Hth750 Bronze Thru-Hull - Hth-750 - 34-Hth750F1

Groco, Thru-Hulls & Seacocks
$46.41

Includes locknut.

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Groco Hth625 Bronze Hose Thru-Hull - Hth-625 - 34-Hth625F1

Groco, Thru-Hulls & Seacocks
$37.59

Includes locknut.

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Groco Hth500 Bronze Thru-Hull - Hth-500 - 34-Hth500F1

Groco, Thru-Hulls & Seacocks
$30.45

Includes locknut.

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Groco Hth2000 Bronze Thru-Hull - Hth-2000 - 34-Hth2000F1

Groco, Thru-Hulls & Seacocks
$132.09

Includes locknut.

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Groco Hth1500 Bronze Hose Thru-Hull - Hth-1500 - 34-Hth1500F1

Groco, Thru-Hulls & Seacocks
$101.49

Includes locknut.

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Groco Hth1250 Bronze Hose Thru-Hull - Hth-1250 - 34-Hth1250F1

Groco, Thru-Hulls & Seacocks
$84.17

Includes locknut.

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Groco Hth1125 Bronze Thru-Hull - Hth-1125 - 34-Hth1125F1

Groco, Thru-Hulls & Seacocks
$71.13

Includes locknut.

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Groco Hth1000 Bronze Hose Thru-Hull - Hth-1000 - 34-Hth1000F1

Groco, Thru-Hulls & Seacocks
$63.83

Includes locknut.

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Groco Hth Stainless Steel Hose Thru-Hull - Hth-750-S - 34-Hth750Sf1

Groco, Thru-Hulls & Seacocks
$48.19

Includes locknut. Stainless Steel.

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Groco Hth Stainless Steel Hose Thru-Hull - Hth-625-S - 34-Hth625Sf1

Groco, Thru-Hulls & Seacocks
$48.19

Includes locknut. Stainless Steel.

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Groco Hth Stainless Steel Hose Thru-Hull - Hth-500-S - 34-Hth500Sf1

Groco, Thru-Hulls & Seacocks
$55.29

Includes locknut. Stainless Steel.

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Groco Hth Stainless Steel Hose Thru-Hull - Hth-2000-S - 34-Hth2000Sf1

Groco, Thru-Hulls & Seacocks
$147.49

Includes locknut. Stainless Steel.

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Groco Hth Stainless Steel Hose Thru-Hull - Hth-1500-S - 34-Hth1500Sf1

Groco, Thru-Hulls & Seacocks
$119.09

Includes locknut. Stainless Steel.

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Groco Hth Stainless Steel Hose Thru-Hull - Hth-1250-S - 34-Hth1250Sf1

Groco, Thru-Hulls & Seacocks
$97.89

Includes locknut. Stainless Steel.

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Groco Hth Stainless Steel Hose Thru-Hull - Hth-1125-S - 34-Hth1125Sf1

Groco, Thru-Hulls & Seacocks
$59.59

Includes locknut. Stainless Steel.

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Groco Hth Stainless Steel Hose Thru-Hull - Hth-1000-S - 34-Hth1000Sf1

Groco, Thru-Hulls & Seacocks
$58.19

Includes locknut. Stainless Steel.

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Groco Hsth Bronze High Speed Standard Length Thru-Hull W/Nut 3/4" - Hsth-750-W - 34-Hsth750Wf1

Groco, Thru-Hulls & Seacocks
$31.19

Provides low pressure, low profile flow into plumbing system. Includes nut. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Hsth Bronze High Speed Standard Length Thru-Hull W/Nut 2" - Hsth-2000-W - 34-Hsth2000Wf1

Groco, Thru-Hulls & Seacocks
$144.59

Provides low pressure, low profile flow into plumbing system. Includes nut. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Hsth Bronze High Speed Standard Length Thru-Hull W/Nut 1" - Hsth-1000-W - 34-Hsth1000Wf1

Groco, Thru-Hulls & Seacocks
$49.69

Provides low pressure, low profile flow into plumbing system. Includes nut. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Hsth Bronze High Speed Standard Length Thru-Hull W/Nut 1-1/4" - Hsth-1250-W - 34-Hsth1250Wf1

Groco, Thru-Hulls & Seacocks
$87.89

Provides low pressure, low profile flow into plumbing system. Includes nut. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Hsth Bronze High Speed Standard Length Thru-Hull W/Nut 1-1/2" - Hsth-1500-W - 34-Hsth1500Wf1

Groco, Thru-Hulls & Seacocks
$127.79

Provides low pressure, low profile flow into plumbing system. Includes nut. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Fv475X Bronze 4 Port Tank Selector Valve 3/4" Full Flow - Fv-475-X - 34-Fv475Xf1

Groco, Hoses, Clamps & Fittings
$252.99

For fuel or waterFull 3/4" flowAudible "click" at each handle positionFor thru panel mounting

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Groco Fv-550L Bronze 5-Way Tank Selector Valve 1/2" Full Flow - Fv-550-L - 34-Fv550Lf1

Groco, Hoses, Clamps & Fittings
$234.29

For fuel or waterBottom port is common. Select between four outlets.Full 1/2" flowAudible "click" at each handle positionFor thru-panel mountingC83600 bronze constructionNOT TO BE USED IN POTABLE WATER SYSTEMS

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Groco Fv-450-X Bronze 4-Way Tank Selector Valve 1/2" Full Flow - Fv-450-X - 34-Fv450Xf1

Groco, Hoses, Clamps & Fittings
$186.39

For fuel or waterFour Positions: Tank-1, Tank-2, Tanks 1 & 2, OffFull 1/2" flowAudible "click" at each handle positionFor thru panel mountingNOT TO BE USED IN POTABLE WATER SYSTEMS

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Groco Fv-410-X Bronze 4-Way Tank Selector Valve 1" Full Flow - Fv-410-X - 34-Fv410Xf1

Groco, Hoses, Clamps & Fittings
$560.19

For fuel or waterFour Positions: Tank-1, Tank-2, Tanks 1 & 2, OffFull 1" flowAudible "click" at each handle positionFor thru panel mountingNOT TO BE USED IN POTABLE WATER SYSTEMS

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Groco Fth Bronze Flush Thru-Hull With Nut - Fth-750-W - 34-Fth750Wf1

Groco, Thru-Hulls & Seacocks
$38.59

Includes locknut. Bronze.NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Fth Bronze Flush Thru-Hull With Nut - Fth-1500-W - 34-Fth1500Wf1

Groco, Thru-Hulls & Seacocks
$124.33

Includes locknut. Bronze.NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Fth Bronze Flush Thru-Hull With Nut - Fth-1000-W - 34-Fth1000Wf1

Groco, Thru-Hulls & Seacocks
$56.22

Includes locknut. Bronze.NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Ffc Bronze Full Flow 90 Degree Pipe-To Hose Adapter With Npt Thread - Ffc-750 - 34-Ffc750F1

Groco, Hoses, Clamps & Fittings
$36.96

Used for connecting hose to valve, seacocks, strainers or any hardware having female NPT pipe threads. FFC fittings are designed to accommodate the designed full pipe size flow and to provide an unrestricted passage through the fitting. Fittings are cast bronze. A hex nut is cast-in to allow for secure tightening. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Ffc Bronze Full Flow 90 Degree Pipe-To Hose Adapter With Npt Thread - Ffc-500 - 34-Ffc500F1

Groco, Hoses, Clamps & Fittings
$26.80

Used for connecting hose to valve, seacocks, strainers or any hardware having female NPT pipe threads. FFC fittings are designed to accommodate the designed full pipe size flow and to provide an unrestricted passage through the fitting. Fittings are cast bronze. A hex nut is cast-in to allow for secure tightening. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Ffc Bronze Full Flow 90 Degree Pipe-To Hose Adapter With Npt Thread - Ffc-2000 - 34-Ffc2000F1

Groco, Hoses, Clamps & Fittings
$294.99

Used for connecting hose to valve, seacocks, strainers or any hardware having female NPT pipe threads. FFC fittings are designed to accommodate the designed full pipe size flow and to provide an unrestricted passage through the fitting. Fittings are cast bronze. A hex nut is cast-in to allow for secure tightening. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Ffc Bronze Full Flow 90 Degree Pipe-To Hose Adapter With Npt Thread - Ffc-1500 - 34-Ffc1500F1

Groco, Hoses, Clamps & Fittings
$109.19

Used for connecting hose to valve, seacocks, strainers or any hardware having female NPT pipe threads. FFC fittings are designed to accommodate the designed full pipe size flow and to provide an unrestricted passage through the fitting. Fittings are cast bronze. A hex nut is cast-in to allow for secure tightening. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Ffc Bronze Full Flow 90 Degree Pipe-To Hose Adapter With Npt Thread - Ffc-1250 - 34-Ffc1250F1

Groco, Hoses, Clamps & Fittings
$88.66

Used for connecting hose to valve, seacocks, strainers or any hardware having female NPT pipe threads. FFC fittings are designed to accommodate the designed full pipe size flow and to provide an unrestricted passage through the fitting. Fittings are cast bronze. A hex nut is cast-in to allow for secure tightening. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Ffc Bronze Full Flow 90 Degree Pipe-To Hose Adapter With Npt Thread - Ffc-1125 - 34-Ffc1125F1

Groco, Hoses, Clamps & Fittings
$50.37

Used for connecting hose to valve, seacocks, strainers or any hardware having female NPT pipe threads. FFC fittings are designed to accommodate the designed full pipe size flow and to provide an unrestricted passage through the fitting. Fittings are cast bronze. A hex nut is cast-in to allow for secure tightening. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Ffc Bronze Full Flow 90 Degree Pipe-To Hose Adapter With Npt Thread - Ffc-1000 - 34-Ffc1000F1

Groco, Hoses, Clamps & Fittings
$54.86

Used for connecting hose to valve, seacocks, strainers or any hardware having female NPT pipe threads. FFC fittings are designed to accommodate the designed full pipe size flow and to provide an unrestricted passage through the fitting. Fittings are cast bronze. A hex nut is cast-in to allow for secure tightening. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Ff Bronze Full Flow Pipe-To Hose Adapter With Npt Thread - Ff-750 - 34-Ff750F1

Groco, Hoses, Clamps & Fittings
$22.21

Used for connecting hose to valve, seacocks, strainers or any hardware having female NPT pipe threads. FF fittings are designed to accommodate the designed full pipe size flow and to provide an unrestricted passage through the fitting. Fittings are cast bronze. A hex nut is cast-in to allow for secure tightening. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Ff Bronze Full Flow Pipe-To Hose Adapter With Npt Thread - Ff-500 - 34-Ff500F1

Groco, Hoses, Clamps & Fittings
$16.29

Used for connecting hose to valve, seacocks, strainers or any hardware having female NPT pipe threads. FF fittings are designed to accommodate the designed full pipe size flow and to provide an unrestricted passage through the fitting. Fittings are cast bronze. A hex nut is cast-in to allow for secure tightening. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Ff Bronze Full Flow Pipe-To Hose Adapter With Npt Thread - Ff-3000 - 34-Ff3000F1

Groco, Hoses, Clamps & Fittings
$276.59

Used for connecting hose to valve, seacocks, strainers or any hardware having female NPT pipe threads. FF fittings are designed to accommodate the designed full pipe size flow and to provide an unrestricted passage through the fitting. Fittings are cast bronze. A hex nut is cast-in to allow for secure tightening. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Ff Bronze Full Flow Pipe-To Hose Adapter With Npt Thread - Ff-2500 - 34-Ff2500F1

Groco, Hoses, Clamps & Fittings
$170.29

Used for connecting hose to valve, seacocks, strainers or any hardware having female NPT pipe threads. FF fittings are designed to accommodate the designed full pipe size flow and to provide an unrestricted passage through the fitting. Fittings are cast bronze. A hex nut is cast-in to allow for secure tightening. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Ff Bronze Full Flow Pipe-To Hose Adapter With Npt Thread - Ff-2000 - 34-Ff2000F1

Groco, Hoses, Clamps & Fittings
$121.99

Used for connecting hose to valve, seacocks, strainers or any hardware having female NPT pipe threads. FF fittings are designed to accommodate the designed full pipe size flow and to provide an unrestricted passage through the fitting. Fittings are cast bronze. A hex nut is cast-in to allow for secure tightening. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Ff Bronze Full Flow Pipe-To Hose Adapter With Npt Thread - Ff-1500 - 34-Ff1500F1

Groco, Hoses, Clamps & Fittings
$54.76

Used for connecting hose to valve, seacocks, strainers or any hardware having female NPT pipe threads. FF fittings are designed to accommodate the designed full pipe size flow and to provide an unrestricted passage through the fitting. Fittings are cast bronze. A hex nut is cast-in to allow for secure tightening. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Ff Bronze Full Flow Pipe-To Hose Adapter With Npt Thread - Ff-1250 - 34-Ff1250F1

Groco, Hoses, Clamps & Fittings
$43.07

Used for connecting hose to valve, seacocks, strainers or any hardware having female NPT pipe threads. FF fittings are designed to accommodate the designed full pipe size flow and to provide an unrestricted passage through the fitting. Fittings are cast bronze. A hex nut is cast-in to allow for secure tightening. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Ff Bronze Full Flow Pipe-To Hose Adapter With Npt Thread - Ff-1125 - 34-Ff1125F1

Groco, Hoses, Clamps & Fittings
$26.63

Used for connecting hose to valve, seacocks, strainers or any hardware having female NPT pipe threads. FF fittings are designed to accommodate the designed full pipe size flow and to provide an unrestricted passage through the fitting. Fittings are cast bronze. A hex nut is cast-in to allow for secure tightening. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Ff Bronze Full Flow Pipe-To Hose Adapter With Npt Thread - Ff-1000 - 34-Ff1000F1

Groco, Hoses, Clamps & Fittings
$26.69

Used for connecting hose to valve, seacocks, strainers or any hardware having female NPT pipe threads. FF fittings are designed to accommodate the designed full pipe size flow and to provide an unrestricted passage through the fitting. Fittings are cast bronze. A hex nut is cast-in to allow for secure tightening. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Fbv Bronze Full-Flow Tri-Flange Seacock - Fbv-750 - 34-Fbv750F1

Groco, Thru-Hulls & Seacocks
$113.79

Patented field reversible handle allows you to select the closed position orientation (Clockwise or Counterclockwise) that best suits the installation. Handle has square hole to accept standard ratchet, to help reach valves in hard-to-reach location and eases operation of hard to actuate valves. Chrome plated solid brass ball (not a hollow ball). Stainless steel handle and hardware. PTFE seats and seals. Drain plug on both sides for efficient winterization. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Fbv Bronze Full-Flow Tri-Flange Seacock - Fbv-3000 - 34-Fbv3000F1

Groco, Thru-Hulls & Seacocks
$1,027.59

Patented field reversible handle allows you to select the closed position orientation (Clockwise or Counterclockwise) that best suits the installation. Handle has square hole to accept standard ratchet, to help reach valves in hard-to-reach location and eases operation of hard to actuate valves. Chrome plated solid brass ball (not a hollow ball). Stainless steel handle and hardware. PTFE seats and seals. Drain plug on both sides for efficient winterization. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Fbv Bronze Full-Flow Tri-Flange Seacock - Fbv-2500 - 34-Fbv2500F1

Groco, Thru-Hulls & Seacocks
$773.99

Patented field reversible handle allows you to select the closed position orientation (Clockwise or Counterclockwise) that best suits the installation. Handle has square hole to accept standard ratchet, to help reach valves in hard-to-reach location and eases operation of hard to actuate valves. Chrome plated solid brass ball (not a hollow ball). Stainless steel handle and hardware. PTFE seats and seals. Drain plug on both sides for efficient winterization. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Fbv Bronze Full-Flow Tri-Flange Seacock - Fbv-2000 - 34-Fbv2000F1

Groco, Thru-Hulls & Seacocks
$426.19

Patented field reversible handle allows you to select the closed position orientation (Clockwise or Counterclockwise) that best suits the installation. Handle has square hole to accept standard ratchet, to help reach valves in hard-to-reach location and eases operation of hard to actuate valves. Chrome plated solid brass ball (not a hollow ball). Stainless steel handle and hardware. PTFE seats and seals. Drain plug on both sides for efficient winterization. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Fbv Bronze Full-Flow Tri-Flange Seacock - Fbv-1500 - 34-Fbv1500F1

Groco, Thru-Hulls & Seacocks
$263.09

Patented field reversible handle allows you to select the closed position orientation (Clockwise or Counterclockwise) that best suits the installation. Handle has square hole to accept standard ratchet, to help reach valves in hard-to-reach location and eases operation of hard to actuate valves. Chrome plated solid brass ball (not a hollow ball). Stainless steel handle and hardware. PTFE seats and seals. Drain plug on both sides for efficient winterization. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Fbv Bronze Full-Flow Tri-Flange Seacock - Fbv-1250 - 34-Fbv1250F1

Groco, Thru-Hulls & Seacocks
$194.59

Patented field reversible handle allows you to select the closed position orientation (Clockwise or Counterclockwise) that best suits the installation. Handle has square hole to accept standard ratchet, to help reach valves in hard-to-reach location and eases operation of hard to actuate valves. Chrome plated solid brass ball (not a hollow ball). Stainless steel handle and hardware. PTFE seats and seals. Drain plug on both sides for efficient winterization. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Fbv Bronze Full-Flow Tri-Flange Seacock - Fbv-1000 - 34-Fbv1000F1

Groco, Thru-Hulls & Seacocks
$157.59

Patented field reversible handle allows you to select the closed position orientation (Clockwise or Counterclockwise) that best suits the installation. Handle has square hole to accept standard ratchet, to help reach valves in hard-to-reach location and eases operation of hard to actuate valves. Chrome plated solid brass ball (not a hollow ball). Stainless steel handle and hardware. PTFE seats and seals. Drain plug on both sides for efficient winterization. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Cv Bronze In-Line Check Valve - Cv-75 - 34-Cv75F1

Groco, Hoses, Clamps & Fittings
$50.69

In-line check valve may be used in water or fuel systems to keep pumps primed and to prevent back-flow in pressure systems. Unique design reduces flow turbulence and restriction, and improves pump performance. Cast bronze construction. NPT threaded ports. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Cv Bronze In-Line Check Valve - Cv-50 - 34-Cv50F1

Groco, Hoses, Clamps & Fittings
$42.49

In-line check valve may be used in water or fuel systems to keep pumps primed and to prevent back-flow in pressure systems. Unique design reduces flow turbulence and restriction, and improves pump performance. Cast bronze construction. NPT threaded ports. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Cv Bronze In-Line Check Valve - Cv-200 - 34-Cv200F1

Groco, Hoses, Clamps & Fittings
$285.19

In-line check valve may be used in water or fuel systems to keep pumps primed and to prevent back-flow in pressure systems. Unique design reduces flow turbulence and restriction, and improves pump performance. Cast bronze construction. NPT threaded ports. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Cv Bronze In-Line Check Valve - Cv-150 - 34-Cv150F1

Groco, Hoses, Clamps & Fittings
$191.79

In-line check valve may be used in water or fuel systems to keep pumps primed and to prevent back-flow in pressure systems. Unique design reduces flow turbulence and restriction, and improves pump performance. Cast bronze construction. NPT threaded ports. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Cv Bronze In-Line Check Valve - Cv-125 - 34-Cv125F1

Groco, Hoses, Clamps & Fittings
$125.99

In-line check valve may be used in water or fuel systems to keep pumps primed and to prevent back-flow in pressure systems. Unique design reduces flow turbulence and restriction, and improves pump performance. Cast bronze construction. NPT threaded ports. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Cv Bronze In-Line Check Valve - Cv-100 - 34-Cv100F1

Groco, Hoses, Clamps & Fittings
$67.29

In-line check valve may be used in water or fuel systems to keep pumps primed and to prevent back-flow in pressure systems. Unique design reduces flow turbulence and restriction, and improves pump performance. Cast bronze construction. NPT threaded ports. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco C-60 12V Deck Wash Kit With Pgn-50 Spray Nozzle And Cv-75 Check Valve - C-60 12V - 34-C6012Vf1

Groco, Hoses, Clamps & Fittings
$1,269.99

Completely assembled and water tested salt water washdown system provides pressurized water on demand. For deck, anchor wash, or both. Features permanent magnet ball bearing motor, SPO-60-N vane pump, P-9021 in-line check valve and PGN-50 salt water nozzle. Coupled to combination check valve/pressure switch assembly. Mounted on a ready to install platform. Use PST-1 pressure storage tank to reduce pump cycling. PSI range is 15-35. Size: 9-1/2" L x 6-1/2" W x 4-3/4" H. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Bvs2 Seacock/Strainer Combo - Bvs-2 - 34-Bvs2F1

Groco, Thru-Hulls & Seacocks
$48.09

Service Repair kit contains sight glass gaskets, cap o-ring, and valve driver seals

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Groco Bvs Bronze Ball Valve/Strainer Combo 3/4" - Bvs-750 - 34-Bvs750F1

Groco, Thru-Hulls & Seacocks
$1,221.99

For most air conditioning, refrigeration, generator and small main engine raw water supply. Combines raw water strainer with full flow seacock to simplify installation and maintenance. Features bronze castings, SS full flow ball, full flow pipe size, 1/4" turn open/close, no internal tie rods and filter basket material is #304 SS. Strainer top may be rotated in 90° increments to simplify plumbing.NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Bvs Bronze Ball Valve/Strainer Combo 1" - Bvs-1000 - 34-Bvs1000F1

Groco, Thru-Hulls & Seacocks
$1,594.49

For most air conditioning, refrigeration, generator and small main engine raw water supply. Combines raw water strainer with full flow seacock to simplify installation and maintenance. Features bronze castings, SS full flow ball, full flow pipe size, 1/4" turn open/close, no internal tie rods and filter basket material is #304 SS. Strainer top may be rotated in 90° increments to simplify plumbing.NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Bvs Bronze Ball Valve/Strainer Combo 1-1/4" - Bvs-1250 - 34-Bvs1250F1

Groco, Thru-Hulls & Seacocks
$2,084.99

For most air conditioning, refrigeration, generator and small main engine raw water supply. Combines raw water strainer with full flow seacock to simplify installation and maintenance. Features bronze castings, SS full flow ball, full flow pipe size, 1/4" turn open/close, no internal tie rods and filter basket material is #304 SS. Strainer top may be rotated in 90° increments to simplify plumbing.NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Bvs Bronze Ball Valve/Strainer Combo 1-1/2" - Bvs-1500 - 34-Bvs1500F1

Groco, Thru-Hulls & Seacocks
$2,441.39

For most air conditioning, refrigeration, generator and small main engine raw water supply. Combines raw water strainer with full flow seacock to simplify installation and maintenance. Features bronze castings, SS full flow ball, full flow pipe size, 1/4" turn open/close, no internal tie rods and filter basket material is #304 SS. Strainer top may be rotated in 90° increments to simplify plumbing.NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Bv Bronze Full-Flow Flanged Ball-Type Seacock - Bv-750 - 34-Bv750F1

Groco, Thru-Hulls & Seacocks
$495.99

Features patented field-selectable and changeable direction of rotation-permits installation in otherwise unusable locations. Tri-flange base and mount hole pattern provide easy retrofit when replacing most popular brands. Handle has a square hole that accepts standard ratchet-helps to reach hard-to-reach valves, and eases operation of hard to actuate valves. Stainless steel ball and stem, PTFE seats and seals. Serviceable when installed, drain plug on both sides for efficient winterization. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Bv Bronze Full-Flow Flanged Ball-Type Seacock - Bv-4000 - 34-Bv4000F1

Groco, Thru-Hulls & Seacocks
$6,422.79

Features patented field-selectable and changeable direction of rotation-permits installation in otherwise unusable locations. Tri-flange base and mount hole pattern provide easy retrofit when replacing most popular brands. Handle has a square hole that accepts standard ratchet-helps to reach hard-to-reach valves, and eases operation of hard to actuate valves. Stainless steel ball and stem, PTFE seats and seals. Serviceable when installed, drain plug on both sides for efficient winterization. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Bv Bronze Full-Flow Flanged Ball-Type Seacock - Bv-3000 - 34-Bv3000F1

Groco, Thru-Hulls & Seacocks
$3,031.69

Features patented field-selectable and changeable direction of rotation-permits installation in otherwise unusable locations. Tri-flange base and mount hole pattern provide easy retrofit when replacing most popular brands. Handle has a square hole that accepts standard ratchet-helps to reach hard-to-reach valves, and eases operation of hard to actuate valves. Stainless steel ball and stem, PTFE seats and seals. Serviceable when installed, drain plug on both sides for efficient winterization. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Bv Bronze Full-Flow Flanged Ball-Type Seacock - Bv-2500 - 34-Bv2500F1

Groco, Thru-Hulls & Seacocks
$1,943.99

Features patented field-selectable and changeable direction of rotation-permits installation in otherwise unusable locations. Tri-flange base and mount hole pattern provide easy retrofit when replacing most popular brands. Handle has a square hole that accepts standard ratchet-helps to reach hard-to-reach valves, and eases operation of hard to actuate valves. Stainless steel ball and stem, PTFE seats and seals. Serviceable when installed, drain plug on both sides for efficient winterization. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Bv Bronze Full-Flow Flanged Ball-Type Seacock - Bv-2000 - 34-Bv2000F1

Groco, Thru-Hulls & Seacocks
$1,217.49

Features patented field-selectable and changeable direction of rotation-permits installation in otherwise unusable locations. Tri-flange base and mount hole pattern provide easy retrofit when replacing most popular brands. Handle has a square hole that accepts standard ratchet-helps to reach hard-to-reach valves, and eases operation of hard to actuate valves. Stainless steel ball and stem, PTFE seats and seals. Serviceable when installed, drain plug on both sides for efficient winterization. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Bv Bronze Full-Flow Flanged Ball-Type Seacock - Bv-1500 - 34-Bv1500F1

Groco, Thru-Hulls & Seacocks
$865.99

Features patented field-selectable and changeable direction of rotation-permits installation in otherwise unusable locations. Tri-flange base and mount hole pattern provide easy retrofit when replacing most popular brands. Handle has a square hole that accepts standard ratchet-helps to reach hard-to-reach valves, and eases operation of hard to actuate valves. Stainless steel ball and stem, PTFE seats and seals. Serviceable when installed, drain plug on both sides for efficient winterization. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Bv Bronze Full-Flow Flanged Ball-Type Seacock - Bv-1250 - 34-Bv1250F1

Groco, Thru-Hulls & Seacocks
$767.59

Features patented field-selectable and changeable direction of rotation-permits installation in otherwise unusable locations. Tri-flange base and mount hole pattern provide easy retrofit when replacing most popular brands. Handle has a square hole that accepts standard ratchet-helps to reach hard-to-reach valves, and eases operation of hard to actuate valves. Stainless steel ball and stem, PTFE seats and seals. Serviceable when installed, drain plug on both sides for efficient winterization. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Bv Bronze Full-Flow Flanged Ball-Type Seacock - Bv-1000 - 34-Bv1000F1

Groco, Thru-Hulls & Seacocks
$597.49

Features patented field-selectable and changeable direction of rotation-permits installation in otherwise unusable locations. Tri-flange base and mount hole pattern provide easy retrofit when replacing most popular brands. Handle has a square hole that accepts standard ratchet-helps to reach hard-to-reach valves, and eases operation of hard to actuate valves. Stainless steel ball and stem, PTFE seats and seals. Serviceable when installed, drain plug on both sides for efficient winterization. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Bb Backing Block For Flanged Seacock - Bb-3 - 34-Bb3F1

Groco, Thru-Hulls & Seacocks
$148.69

Flanged seacock installation is improved with the use of a backing block between the valve flange and the hull. Each size fits multiple seacock sizesPress threaded inserts into the hull side of the backing block into the holes that match the seacock flange1/2" thickness is rigid enough for a secure installation but flexible enough to conform to minor hull curvatureWill not swell or absorb moistureMade from an environmentally friendly PVC foam specially formulated for marine applications

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Groco Bb Backing Block For Flanged Seacock - Bb-2 - 34-Bb2F1

Groco, Thru-Hulls & Seacocks
$127.39

Flanged seacock installation is improved with the use of a backing block between the valve flange and the hull. Each size fits multiple seacock sizesPress threaded inserts into the hull side of the backing block into the holes that match the seacock flange1/2" thickness is rigid enough for a secure installation but flexible enough to conform to minor hull curvatureWill not swell or absorb moistureMade from an environmentally friendly PVC foam specially formulated for marine applications

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Groco Bb Backing Block For Flanged Seacock - Bb-1 - 34-Bb1F1

Groco, Thru-Hulls & Seacocks
$100.09

Flanged seacock installation is improved with the use of a backing block between the valve flange and the hull. Each size fits multiple seacock sizesPress threaded inserts into the hull side of the backing block into the holes that match the seacock flange1/2" thickness is rigid enough for a secure installation but flexible enough to conform to minor hull curvatureWill not swell or absorb moistureMade from an environmentally friendly PVC foam specially formulated for marine applications

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Groco Asc2000 Bronze Slotted Hull Strainer With Access - Asc-2000 - 34-Asc2000F1

Groco, Thru-Hulls & Seacocks
$369.99

Access to the thru-hull fitting and seacock beneath the hull strainer is made easy with the patented access door design. No need to remove the entire strainer to clear debris or marine growth. Uses #10 fasteners. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Asc1250 Bronze Slotted Hull Strainer With Access - Asc-1250 - 34-Asc1250F1

Groco, Thru-Hulls & Seacocks
$274.09

Access to the thru-hull fitting and seacock beneath the hull strainer is made easy with the patented access door design. No need to remove the entire strainer to clear debris or marine growth. Uses #10 fasteners. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco As-100 Bilge Pump Switch - As-100 - 34-As100F1

Groco, Bilge Pumps & Blowers
$223.49

AS-100 uses the simple and reliable pressure fluctuation from a rising or falling bilge water level to turn your bilge pump on and off automatically. No floats to stick or fill with water. Approximate levels are on at 2-3/4" of bilge level and off at 1". Use with a pump that draws up to 10-amps running continuously or up to 20 amps running intermittently. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Arg753 Sight Glass With Drain Plug For Arg Strainer - Arg-753 - 34-Arg753F1

Groco, Thru-Hulls & Seacocks
$112.99

For the ARG series strainers. Maximum psi is 50. Maximum temperature is 225° F. Sight glass includes drain wingnut.

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Groco Arg750S Bronze Strainer With #304 Ss Basket - Arg-750-S - 34-Arg750Sf1

Groco, Thru-Hulls & Seacocks
$461.79

Standard single strainers. No tie rods or leaks under pressure or vacuum. Quick and easy mounting system allowing removal of strainer without tools. #304 Stainless steel filter basket. O-ring seals at strainer cap and between strainer head and sight glass. See-thru screw-on strainer cap allows easy, no-tools maintenance. Spanner wrench holes in cover allow the use of SW-2531 wrench. Install with pipe or hose. Do not use chemical or abrasive cleaners on sight glass. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Arg503 Sight Glass With Drain Plug For Arg Strainer - Arg-503 - 34-Arg503F1

Groco, Thru-Hulls & Seacocks
$97.19

For the ARG series strainers. Maximum psi is 50. Maximum temperature is 225° F. Sight glass includes drain wingnut.

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Groco Arg500S Bronze Strainer With #304 Ss Basket - Arg500S - 34-Arg500Sf1

Groco, Thru-Hulls & Seacocks
$448.79

Standard single strainers. No tie rods or leaks under pressure or vacuum. Quick and easy mounting system allowing removal of strainer without tools. #304 Stainless steel filter basket. O-ring seals at strainer cap and between strainer head and sight glass. See-thru screw-on strainer cap allows easy, no-tools maintenance. Spanner wrench holes in cover allow the use of SW-2531 wrench. Install with pipe or hose. Do not use chemical or abrasive cleaners on sight glass. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Arg3000S Bronze Strainer With #304 Ss Basket - Arg-3000-S - 34-Arg3000Sf1

Groco, Thru-Hulls & Seacocks
$1,375.39

Standard single strainers. No tie rods or leaks under pressure or vacuum. Quick and easy mounting system allowing removal of strainer without tools. #304 Stainless steel filter basket. O-ring seals at strainer cap and between strainer head and sight glass. See-thru screw-on strainer cap allows easy, no-tools maintenance. Spanner wrench holes in cover allow the use of SW-2531 wrench. Install with pipe or hose. Do not use chemical or abrasive cleaners on sight glass. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Arg2500S Bronze Strainer With #304 Ss Basket - Arg-2500-S - 34-Arg2500Sf1

Groco, Thru-Hulls & Seacocks
$1,284.69

Standard single strainers. No tie rods or leaks under pressure or vacuum. Quick and easy mounting system allowing removal of strainer without tools. #304 Stainless steel filter basket. O-ring seals at strainer cap and between strainer head and sight glass. See-thru screw-on strainer cap allows easy, no-tools maintenance. Spanner wrench holes in cover allow the use of SW-2531 wrench. Install with pipe or hose. Do not use chemical or abrasive cleaners on sight glass. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Arg2000S Bronze Strainer With #304 Ss Basket - Arg-2000-S - 34-Arg2000Sf1

Groco, Thru-Hulls & Seacocks
$1,103.29

Standard single strainers. No tie rods or leaks under pressure or vacuum. Quick and easy mounting system allowing removal of strainer without tools. #304 Stainless steel filter basket. O-ring seals at strainer cap and between strainer head and sight glass. See-thru screw-on strainer cap allows easy, no-tools maintenance. Spanner wrench holes in cover allow the use of SW-2531 wrench. Install with pipe or hose. Do not use chemical or abrasive cleaners on sight glass. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Arg1503 Sight Glass With Drain Plug For Arg Strainer - Arg-1503 - 34-Arg1503F1

Groco, Thru-Hulls & Seacocks
$231.69

For the ARG series strainers. Maximum psi is 50. Maximum temperature is 225° F. Sight glass includes drain wingnut.

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Groco Arg1500S Bronze Strainer With #304 Ss Basket - Arg-1500-S - 34-Arg1500Sf1

Groco, Thru-Hulls & Seacocks
$1,041.69

Standard single strainers. No tie rods or leaks under pressure or vacuum. Quick and easy mounting system allowing removal of strainer without tools. #304 Stainless steel filter basket. O-ring seals at strainer cap and between strainer head and sight glass. See-thru screw-on strainer cap allows easy, no-tools maintenance. Spanner wrench holes in cover allow the use of SW-2531 wrench. Install with pipe or hose. Do not use chemical or abrasive cleaners on sight glass. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Arg1253 Sight Glass With Drain Plug For Arg Strainer - Arg-1253 - 34-Arg1253F1

Groco, Thru-Hulls & Seacocks
$160.29

For the ARG series strainers. Maximum psi is 50. Maximum temperature is 225° F. Sight glass includes drain wingnut.

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Groco Arg1250S Bronze Strainer With #304 Ss Basket - Arg1250S - 34-Arg1250Sf1

Groco, Thru-Hulls & Seacocks
$688.89

Standard single strainers. No tie rods or leaks under pressure or vacuum. Quick and easy mounting system allowing removal of strainer without tools. #304 Stainless steel filter basket. O-ring seals at strainer cap and between strainer head and sight glass. See-thru screw-on strainer cap allows easy, no-tools maintenance. Spanner wrench holes in cover allow the use of SW-2531 wrench. Install with pipe or hose. Do not use chemical or abrasive cleaners on sight glass. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Arg1003 Sight Glass With Drain Plug For Arg Strainer - Arg-1003 - 34-Arg1003F1

Groco, Thru-Hulls & Seacocks
$142.99

For the ARG series strainers. Maximum psi is 50. Maximum temperature is 225° F. Sight glass includes drain wingnut.

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Groco Arg1000S Bronze Strainer With #304 Ss Basket - Arg-1000-S - 34-Arg1000Sf1

Groco, Thru-Hulls & Seacocks
$647.49

Standard single strainers. No tie rods or leaks under pressure or vacuum. Quick and easy mounting system allowing removal of strainer without tools. #304 Stainless steel filter basket. O-ring seals at strainer cap and between strainer head and sight glass. See-thru screw-on strainer cap allows easy, no-tools maintenance. Spanner wrench holes in cover allow the use of SW-2531 wrench. Install with pipe or hose. Do not use chemical or abrasive cleaners on sight glass. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Arg Strainer Cap, 1/2" - Arg-501-Pc - 34-Arg501Pcf1

Groco, Thru-Hulls & Seacocks
$40.29

PC non-meatallic strainer cap.

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Groco Arg Strainer Cap, 1" - Arg-1001-Pc - 34-Arg1001Pcf1

Groco, Thru-Hulls & Seacocks
$58.69

PC non-meatallic strainer cap.

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Groco Arg Strainer Cap, 1-1/2" - Arg-1501-Pc - 34-Arg1501Pcf1

Groco, Thru-Hulls & Seacocks
$67.39

PC non-meatallic strainer cap.

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Groco Arg Bronze Strainer With Plastic Basket - Arg-755-P - 34-Arg755Pf1

Groco, Thru-Hulls & Seacocks
$424.79

Standard single strainers. No tie rods or leaks under pressure or vacuum. Quick and easy mounting system allowing removal of strainer without tools. #304 Stainless steel filter basket. O-ring seals at strainer cap and between strainer head and sight glass. See-thru screw-on strainer cap allows easy, no-tools maintenance. Spanner wrench holes in cover allow the use of SW-2531 wrench. Install with pipe or hose. Do not use chemical or abrasive cleaners on sight glass. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Arg Bronze Strainer With Plastic Basket - Arg-750-P - 34-Arg750Pf1

Groco, Thru-Hulls & Seacocks
$435.89

Standard single strainers. No tie rods or leaks under pressure or vacuum. Quick and easy mounting system allowing removal of strainer without tools. #304 Stainless steel filter basket. O-ring seals at strainer cap and between strainer head and sight glass. See-thru screw-on strainer cap allows easy, no-tools maintenance. Spanner wrench holes in cover allow the use of SW-2531 wrench. Install with pipe or hose. Do not use chemical or abrasive cleaners on sight glass. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Arg Bronze Strainer With Plastic Basket - Arg-500-P - 34-Arg500Pf1

Groco, Thru-Hulls & Seacocks
$424.79

Standard single strainers. No tie rods or leaks under pressure or vacuum. Quick and easy mounting system allowing removal of strainer without tools. #304 Stainless steel filter basket. O-ring seals at strainer cap and between strainer head and sight glass. See-thru screw-on strainer cap allows easy, no-tools maintenance. Spanner wrench holes in cover allow the use of SW-2531 wrench. Install with pipe or hose. Do not use chemical or abrasive cleaners on sight glass. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Arg Bronze Strainer With Plastic Basket - Arg-3000-P - 34-Arg3000Pf1

Groco, Thru-Hulls & Seacocks
$1,387.69

Standard single strainers. No tie rods or leaks under pressure or vacuum. Quick and easy mounting system allowing removal of strainer without tools. #304 Stainless steel filter basket. O-ring seals at strainer cap and between strainer head and sight glass. See-thru screw-on strainer cap allows easy, no-tools maintenance. Spanner wrench holes in cover allow the use of SW-2531 wrench. Install with pipe or hose. Do not use chemical or abrasive cleaners on sight glass. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Arg Bronze Strainer With Plastic Basket - Arg-2500-P - 34-Arg2500Pf1

Groco, Thru-Hulls & Seacocks
$1,232.89

Standard single strainers. No tie rods or leaks under pressure or vacuum. Quick and easy mounting system allowing removal of strainer without tools. #304 Stainless steel filter basket. O-ring seals at strainer cap and between strainer head and sight glass. See-thru screw-on strainer cap allows easy, no-tools maintenance. Spanner wrench holes in cover allow the use of SW-2531 wrench. Install with pipe or hose. Do not use chemical or abrasive cleaners on sight glass. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Arg Bronze Strainer With Plastic Basket - Arg-1500-P - 34-Arg1500Pf1

Groco, Thru-Hulls & Seacocks
$985.09

Standard single strainers. No tie rods or leaks under pressure or vacuum. Quick and easy mounting system allowing removal of strainer without tools. #304 Stainless steel filter basket. O-ring seals at strainer cap and between strainer head and sight glass. See-thru screw-on strainer cap allows easy, no-tools maintenance. Spanner wrench holes in cover allow the use of SW-2531 wrench. Install with pipe or hose. Do not use chemical or abrasive cleaners on sight glass. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Northern Marine Canada
Our products are shipped from Canada!
Parts Warehouse:
Toronto, Ontario, Canada
Head Office:
Kingston, Ontario

About Us

Northern Marine is a Canadian supplier of premium marine and RV parts and accessories from top industry brands. We focus on quality, accurate listings, and dependable fulfillment so you can maintain, repair, and outfit your boat or RV with confidence.

Our goal is simple: get you the right parts, shipped fast, with straightforward service you can count on.