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Over 50 years of Trusted Marine Service

Seacocks & Thru-Hulls

Marine seacocks and thru-hull fittings for water-system installations. Match material, dimensions and connection type.

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Jabsco 464000002 Pumpguard Fine Mesh In Line Strainer, 1/2" Hose Barb In/Out, Straight Sold out

Jabsco 464000002 Pumpguard Fine Mesh In Line Strainer, 1/2" Hose Barb In/Out, Straight

$63.49 - $63.49
$63.49
$63.49 - $63.49
$63.49
Sold out

This compact pre filter prevents particles jamming valves and causing pump breakdowns - we’ve given it a screw off, transparent housing for easy in...

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$63.49 - $63.49
$63.49
$63.49 - $63.49
$63.49
Sold out
Jabsco 462000000 Pumpguard Coarse Mesh In Line Strainer, 3/4" Hose Barb In/Out, Straight Sold out

Jabsco 462000000 Pumpguard Coarse Mesh In Line Strainer, 3/4" Hose Barb In/Out, Straight

$68.79 - $68.79
$68.79
$68.79 - $68.79
$68.79
Sold out

This compact pre filter prevents particles jamming valves and causing pump breakdowns - we’ve given it a screw off, transparent housing for easy in...

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$68.79 - $68.79
$68.79
$68.79 - $68.79
$68.79
Sold out
Thru Hull-1-1/8 Sold out

Thru Hull-1-1/8

$10.29 - $10.29
$10.29
$10.29 - $10.29
$10.29
Sold out

These Thru-Hulls are ideal for salt water use because they are impervious to electrolysis and corrosion. For use with hose to allow water to pass i...

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$10.29 - $10.29
$10.29
$10.29 - $10.29
$10.29
Sold out
Thru-Hull Fitting 3/4" Sold out

Thru-Hull Fitting 3/4"

$9.39 - $9.39
$9.39
$9.39 - $9.39
$9.39
Sold out

These Thru-Hulls are ideal for salt water use because they are impervious to electrolysis and corrosion. For use with hose to allow water to pass i...

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$9.39 - $9.39
$9.39
$9.39 - $9.39
$9.39
Sold out
Thru-Hull-3/4
Sold out

Thru-Hull-3/4

$5.59 - $5.59
$5.59
$5.59 - $5.59
$5.59
Sold out

These Thru-Hulls are ideal for salt water use because they are impervious to electrolysis and corrosion. For use with hose to allow water to pass i...

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$5.59 - $5.59
$5.59
$5.59 - $5.59
$5.59
Sold out
Thru-Hull Fitting 5/8" --
Sold out

Thru-Hull Fitting 5/8" --

$9.39 - $9.39
$9.39
$9.39 - $9.39
$9.39
Sold out

These Thru-Hulls are ideal for salt water use because they are impervious to electrolysis and corrosion. For use with hose to allow water to pass i...

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$9.39 - $9.39
$9.39
$9.39 - $9.39
$9.39
Sold out
Thru-Hull Fitting 1 1/2" --
Sold out

Thru-Hull Fitting 1 1/2" --

$17.79 - $17.79
$17.79
$17.79 - $17.79
$17.79
Sold out

These Thru-Hulls are ideal for salt water use because they are impervious to electrolysis and corrosion. For use with hose to allow water to pass i...

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$17.79 - $17.79
$17.79
$17.79 - $17.79
$17.79
Sold out
Thru-Hull Fitting 1 1/8" --
Sold out

Thru-Hull Fitting 1 1/8" --

$14.19 - $14.19
$14.19
$14.19 - $14.19
$14.19
Sold out

These Thru-Hulls are ideal for salt water use because they are impervious to electrolysis and corrosion. For use with hose to allow water to pass i...

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$14.19 - $14.19
$14.19
$14.19 - $14.19
$14.19
Sold out
Poly In-Line Strainer, 3/4"
Sold out

Poly In-Line Strainer, 3/4"

$33.59 - $33.59
$33.59
$33.59 - $33.59
$33.59
Sold out

In-Line Water Strainer contains a removable, clear lens for easy cleaning and changing of filter. Filter is interchangeable with Jabsco. Filter sho...

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$33.59 - $33.59
$33.59
$33.59 - $33.59
$33.59
Sold out
Sea-Dog 50-mesh inline water strainer family illustration. Select the hose connection size. One complete strainer; gasket shown separately.
Sold out

Sea-Dog 50-Mesh Poly In-Line Water Strainers

$31.99 - $39.09
$31.99 - $39.09
$31.99 - $39.09
$31.99
Sold out

Sea-Dog inline water strainers with a 50-mesh screen, clear removable cover and hose-barb connections. Choose the connection size required by your ...

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$31.99 - $39.09
$31.99 - $39.09
$31.99 - $39.09
$31.99
Sold out
Groco WSB1250P Salt-Water Pump Strainer With Stainless Steel Basket
Sold out

Groco WSB1250P Salt-Water Pump Strainer With Stainless Steel Basket

$142.99 - $142.99
$142.99
$142.99 - $142.99
$142.99
Sold out

Protect fresh water pumps from debris. White nylon strainer head and clear plastic sight glass. Glass unscrews for filter basket cleaning. Mounting...

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$142.99 - $142.99
$142.99
$142.99 - $142.99
$142.99
Sold out
Groco WSB1000P Salt-Water Pump Strainer With Stainless Steel Basket
Sold out

Groco WSB1000P Salt-Water Pump Strainer With Stainless Steel Basket

$137.39 - $137.39
$137.39
$137.39 - $137.39
$137.39
Sold out

Protect fresh water pumps from debris. White nylon strainer head and clear plastic sight glass. Glass unscrews for filter basket cleaning. Mounting...

View full details
$137.39 - $137.39
$137.39
$137.39 - $137.39
$137.39
Sold out
Groco STH Bronze Scoop Thru-Hull With Nut
Sold out

Groco STH Bronze Scoop Thru-Hull With Nut

$72.49 - $72.49
$72.49
$72.49 - $72.49
$72.49
Sold out

Includes locking nut.NOT TO BE USED IN POTABLE WATER SYSTEMS.

$72.49 - $72.49
$72.49
$72.49 - $72.49
$72.49
Sold out
Groco STH Bronze Scoop Thru-Hull With Nut
Sold out

Groco STH Bronze Scoop Thru-Hull With Nut

$57.79 - $57.79
$57.79
$57.79 - $57.79
$57.79
Sold out

Includes locking nut.NOT TO BE USED IN POTABLE WATER SYSTEMS.

$57.79 - $57.79
$57.79
$57.79 - $57.79
$57.79
Sold out
Groco STH Bronze Scoop Thru-Hull With Nut
Sold out

Groco STH Bronze Scoop Thru-Hull With Nut

$270.59 - $270.59
$270.59
$270.59 - $270.59
$270.59
Sold out

Includes locking nut.NOT TO BE USED IN POTABLE WATER SYSTEMS.

$270.59 - $270.59
$270.59
$270.59 - $270.59
$270.59
Sold out
Groco STH Bronze Scoop Thru-Hull With Nut
Sold out

Groco STH Bronze Scoop Thru-Hull With Nut

$159.79 - $159.79
$159.79
$159.79 - $159.79
$159.79
Sold out

Includes locking nut.NOT TO BE USED IN POTABLE WATER SYSTEMS.

$159.79 - $159.79
$159.79
$159.79 - $159.79
$159.79
Sold out
Groco STH Bronze Scoop Thru-Hull With Nut
Sold out

Groco STH Bronze Scoop Thru-Hull With Nut

$143.59 - $143.59
$143.59
$143.59 - $143.59
$143.59
Sold out

Includes locking nut.NOT TO BE USED IN POTABLE WATER SYSTEMS.

$143.59 - $143.59
$143.59
$143.59 - $143.59
$143.59
Sold out
Groco STH Bronze Scoop Thru-Hull With Nut
Sold out

Groco STH Bronze Scoop Thru-Hull With Nut

$100.59 - $100.59
$100.59
$100.59 - $100.59
$100.59
Sold out

Includes locking nut.NOT TO BE USED IN POTABLE WATER SYSTEMS.

$100.59 - $100.59
$100.59
$100.59 - $100.59
$100.59
Sold out
Groco IBV750 Bronze Full-Flow In-Line Ball Valve
Sold out

Groco IBV750 Bronze Full-Flow In-Line Ball Valve

$65.89 - $65.89
$65.89
$65.89 - $65.89
$65.89
Sold out

Patented field reversible handle allows you to select the closed position orientation (clockwise or counterclockwise) that best suits the installat...

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$65.89 - $65.89
$65.89
$65.89 - $65.89
$65.89
Sold out
Groco IBV500 Bronze Full-Flow In-Line Ball Valve
Sold out

Groco IBV500 Bronze Full-Flow In-Line Ball Valve

$57.39 - $57.39
$57.39
$57.39 - $57.39
$57.39
Sold out

Patented field reversible handle allows you to select the closed position orientation (clockwise or counterclockwise) that best suits the installat...

View full details
$57.39 - $57.39
$57.39
$57.39 - $57.39
$57.39
Sold out
Groco THXL Bronze Extra-Length Thru-Hull With Nut, NPS Thread
Sold out

Groco THXL Bronze Extra-Length Thru-Hull With Nut, NPS Thread

$72.59 - $72.59
$72.59
$72.59 - $72.59
$72.59
Sold out

Extra long through hull for installations where hull thickness dictates the use of longer fitting.Locknut included.NOT TO BE USED IN POTABLE WATER ...

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$72.59 - $72.59
$72.59
$72.59 - $72.59
$72.59
Sold out
Groco THXL Bronze Extra-Length Thru-Hull With Nut, NPS Thread
Sold out

Groco THXL Bronze Extra-Length Thru-Hull With Nut, NPS Thread

$159.89 - $159.89
$159.89
$159.89 - $159.89
$159.89
Sold out

Extra long through hull for installations where hull thickness dictates the use of longer fitting.Locknut included.NOT TO BE USED IN POTABLE WATER ...

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$159.89 - $159.89
$159.89
$159.89 - $159.89
$159.89
Sold out
Groco IBV3000 Bronze Full-Flow In-Line Ball Valve
Sold out

Groco IBV3000 Bronze Full-Flow In-Line Ball Valve

$1,359.29 - $1,359.29
$1,359.29
$1,359.29 - $1,359.29
$1,359.29
Sold out

Patented field reversible handle allows you to select the closed position orientation (clockwise or counterclockwise) that best suits the installat...

View full details
$1,359.29 - $1,359.29
$1,359.29
$1,359.29 - $1,359.29
$1,359.29
Sold out
Groco THXL Bronze Extra-Length Thru-Hull With Nut, NPS Thread
Sold out

Groco THXL Bronze Extra-Length Thru-Hull With Nut, NPS Thread

$149.49 - $149.49
$149.49
$149.49 - $149.49
$149.49
Sold out

Extra long through hull for installations where hull thickness dictates the use of longer fitting.Locknut included.NOT TO BE USED IN POTABLE WATER ...

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$149.49 - $149.49
$149.49
$149.49 - $149.49
$149.49
Sold out
Groco SC2500 Bronze Slotted Strainer With Mount Ring
Sold out

Groco SC2500 Bronze Slotted Strainer With Mount Ring

$281.49 - $281.49
$281.49
$281.49 - $281.49
$281.49
Sold out

Mount the ring permanently. Fasten the strainer to the ring and remove as often as needed. Uses 6 #10 fasteners.NOT TO BE USED IN POTABLE WATER SYS...

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$281.49 - $281.49
$281.49
$281.49 - $281.49
$281.49
Sold out
Groco THXL Bronze Extra-Length Thru-Hull With Nut, NPS Thread
Sold out

Groco THXL Bronze Extra-Length Thru-Hull With Nut, NPS Thread

$91.89 - $91.89
$91.89
$91.89 - $91.89
$91.89
Sold out

Extra long through hull for installations where hull thickness dictates the use of longer fitting.Locknut included.NOT TO BE USED IN POTABLE WATER ...

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$91.89 - $91.89
$91.89
$91.89 - $91.89
$91.89
Sold out
Groco SC1500 Bronze Slotted Strainer With Mount Ring
Sold out

Groco SC1500 Bronze Slotted Strainer With Mount Ring

$211.59 - $211.59
$211.59
$211.59 - $211.59
$211.59
Sold out

Mount the ring permanently. Fasten the strainer to the ring and remove as often as needed. Uses 6 #10 fasteners.NOT TO BE USED IN POTABLE WATER SYS...

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$211.59 - $211.59
$211.59
$211.59 - $211.59
$211.59
Sold out
Groco IBV2000 Bronze Full-Flow In-Line Ball Valve
Sold out

Groco IBV2000 Bronze Full-Flow In-Line Ball Valve

$404.69 - $404.69
$404.69
$404.69 - $404.69
$404.69
Sold out

Patented field reversible handle allows you to select the closed position orientation (clockwise or counterclockwise) that best suits the installat...

View full details
$404.69 - $404.69
$404.69
$404.69 - $404.69
$404.69
Sold out
Groco SC1000 Bronze Slotted Strainer With Mount Ring
Sold out

Groco SC1000 Bronze Slotted Strainer With Mount Ring

$104.49 - $104.49
$104.49
$104.49 - $104.49
$104.49
Sold out

Mount the ring permanently. Fasten the strainer to the ring and remove as often as needed. Uses 6 #10 fasteners.NOT TO BE USED IN POTABLE WATER SYS...

View full details
$104.49 - $104.49
$104.49
$104.49 - $104.49
$104.49
Sold out
Groco IBV1500 Bronze Full-Flow In-Line Ball Valve
Sold out

Groco IBV1500 Bronze Full-Flow In-Line Ball Valve

$230.09 - $230.09
$230.09
$230.09 - $230.09
$230.09
Sold out

Patented field reversible handle allows you to select the closed position orientation (clockwise or counterclockwise) that best suits the installat...

View full details
$230.09 - $230.09
$230.09
$230.09 - $230.09
$230.09
Sold out
Groco WSB750 Fresh-Water Pump Strainer With Stainless Steel Basket 3/4"
Sold out

Groco WSB750 Fresh-Water Pump Strainer With Stainless Steel Basket 3/4"

$88.79 - $88.79
$88.79
$88.79 - $88.79
$88.79
Sold out

Protect fresh water pumps from debris. White nylon strainer head and clear plastic sight glass. Glass unscrews for filter basket cleaning. Mounting...

View full details
$88.79 - $88.79
$88.79
$88.79 - $88.79
$88.79
Sold out
Groco IBV1250 Bronze Full-Flow In-Line Ball Valve
Sold out

Groco IBV1250 Bronze Full-Flow In-Line Ball Valve

$171.59 - $171.59
$171.59
$171.59 - $171.59
$171.59
Sold out

Patented field reversible handle allows you to select the closed position orientation (clockwise or counterclockwise) that best suits the installat...

View full details
$171.59 - $171.59
$171.59
$171.59 - $171.59
$171.59
Sold out
Groco WSB500P Salt-Water Pump Strainer With Non-Metallic Basket
Sold out

Groco WSB500P Salt-Water Pump Strainer With Non-Metallic Basket

$91.59 - $91.59
$91.59
$91.59 - $91.59
$91.59
Sold out

Protect fresh water pumps from debris. White nylon strainer head and clear plastic sight glass. Glass unscrews for filter basket cleaning. Mounting...

View full details
$91.59 - $91.59
$91.59
$91.59 - $91.59
$91.59
Sold out
Groco WSB500 Salt-Water Pump Strainer With Stainless Steel Basket
Sold out

Groco WSB500 Salt-Water Pump Strainer With Stainless Steel Basket

$84.49 - $84.49
$84.49
$84.49 - $84.49
$84.49
Sold out

Protect fresh water pumps from debris. White nylon strainer head and clear plastic sight glass. Glass unscrews for filter basket cleaning. Mounting...

View full details
$84.49 - $84.49
$84.49
$84.49 - $84.49
$84.49
Sold out
Groco FTH Bronze Flush Thru-Hull With Nut
Sold out

Groco FTH Bronze Flush Thru-Hull With Nut

$149.59 - $149.59
$149.59
$149.59 - $149.59
$149.59
Sold out

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

$149.59 - $149.59
$149.59
$149.59 - $149.59
$149.59
Sold out
Groco FTH Bronze Flush Thru-Hull With Nut
Sold out

Groco FTH Bronze Flush Thru-Hull With Nut

$66.59 - $66.59
$66.59
$66.59 - $66.59
$66.59
Sold out

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

$66.59 - $66.59
$66.59
$66.59 - $66.59
$66.59
Sold out
Groco BV Bronze Full-Flow Flanged Ball-Type Seacock
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Groco BV Bronze Full-Flow Flanged Ball-Type Seacock

$1,354.79 - $1,354.79
$1,354.79
$1,354.79 - $1,354.79
$1,354.79
Sold out

Features patented field-selectable and changeable direction of rotation-permits installation in otherwise unusable locations. Tri-flange base and m...

View full details
$1,354.79 - $1,354.79
$1,354.79
$1,354.79 - $1,354.79
$1,354.79
Sold out
Groco IBV1000 Bronze Full-Flow In-Line Ball Valve
Sold out

Groco IBV1000 Bronze Full-Flow In-Line Ball Valve

$120.29 - $120.29
$120.29
$120.29 - $120.29
$120.29
Sold out

Patented field reversible handle allows you to select the closed position orientation (clockwise or counterclockwise) that best suits the installat...

View full details
$120.29 - $120.29
$120.29
$120.29 - $120.29
$120.29
Sold out
Groco ARG1003 Sight Glass With Drain Plug For ARG Strainer
Sold out

Groco ARG1003 Sight Glass With Drain Plug For ARG Strainer

$145.99 - $145.99
$145.99
$145.99 - $145.99
$145.99
Sold out

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

$145.99 - $145.99
$145.99
$145.99 - $145.99
$145.99
Sold out
Groco BV Bronze Full-Flow Flanged Ball-Type Seacock
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Groco BV Bronze Full-Flow Flanged Ball-Type Seacock

$968.99 - $968.99
$968.99
$968.99 - $968.99
$968.99
Sold out

Features patented field-selectable and changeable direction of rotation-permits installation in otherwise unusable locations. Tri-flange base and m...

View full details
$968.99 - $968.99
$968.99
$968.99 - $968.99
$968.99
Sold out
Groco BV Bronze Full-Flow Flanged Ball-Type Seacock
Sold out

Groco BV Bronze Full-Flow Flanged Ball-Type Seacock

$856.39 - $856.39
$856.39
$856.39 - $856.39
$856.39
Sold out

Features patented field-selectable and changeable direction of rotation-permits installation in otherwise unusable locations. Tri-flange base and m...

View full details
$856.39 - $856.39
$856.39
$856.39 - $856.39
$856.39
Sold out
Groco BB Backing Block For Flanged Seacock
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Groco BB Backing Block For Flanged Seacock

$150.19 - $150.19
$150.19
$150.19 - $150.19
$150.19
Sold out

Flanged seacock installation is improved with the use of a backing block between the valve flange and the hull. Each size fits multiple seacock siz...

View full details
$150.19 - $150.19
$150.19
$150.19 - $150.19
$150.19
Sold out
Groco BV Bronze Full-Flow Flanged Ball-Type Seacock
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Groco BV Bronze Full-Flow Flanged Ball-Type Seacock

$661.89 - $661.89
$661.89
$661.89 - $661.89
$661.89
Sold out

Features patented field-selectable and changeable direction of rotation-permits installation in otherwise unusable locations. Tri-flange base and m...

View full details
$661.89 - $661.89
$661.89
$661.89 - $661.89
$661.89
Sold out
Groco BB Backing Block For Flanged Seacock
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Groco BB Backing Block For Flanged Seacock

$128.89 - $128.89
$128.89
$128.89 - $128.89
$128.89
Sold out

Flanged seacock installation is improved with the use of a backing block between the valve flange and the hull. Each size fits multiple seacock siz...

View full details
$128.89 - $128.89
$128.89
$128.89 - $128.89
$128.89
Sold out
Groco #304 Stainless Steel Filter Basket
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Groco #304 Stainless Steel Filter Basket

$143.19 - $143.19
$143.19
$143.19 - $143.19
$143.19
Sold out

Spare Basket

$143.19 - $143.19
$143.19
$143.19 - $143.19
$143.19
Sold out
Groco BB Backing Block For Flanged Seacock
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Groco BB Backing Block For Flanged Seacock

$101.59 - $101.59
$101.59
$101.59 - $101.59
$101.59
Sold out

Flanged seacock installation is improved with the use of a backing block between the valve flange and the hull. Each size fits multiple seacock siz...

View full details
$101.59 - $101.59
$101.59
$101.59 - $101.59
$101.59
Sold out
Groco #304 Stainless Steel Filter Basket
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Groco #304 Stainless Steel Filter Basket

$134.59 - $134.59
$134.59
$134.59 - $134.59
$134.59
Sold out

Spare Basket

$134.59 - $134.59
$134.59
$134.59 - $134.59
$134.59
Sold out
Groco #304 Stainless Steel Filter Basket
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Groco #304 Stainless Steel Filter Basket

$120.39 - $120.39
$120.39
$120.39 - $120.39
$120.39
Sold out

Spare Basket

$120.39 - $120.39
$120.39
$120.39 - $120.39
$120.39
Sold out