Groco Marine Plumbing

Groco
  • Groco® - 5/16"-18 Backing Block for 1-1/4" & 1-1/2" Flangeds Seacock
    Groco®5/16"-18 Backing Block for 1-1/4" & 1-1/2" Flangeds Seacock (BB-2)
    0
    # mpn4620924680
    5/16"-18 Backing Block for 1-1/4" & 1-1/2" Flangeds Seacock by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet...
    Flanged seacock installation is improved with the use of a backing block between the valve flange and the hullEach size fits multiple seacock sizes
    $72.98
  • Groco® - 5/16"-18 Backing Block for 3/4" & 1" Flangeds Seacock
    Groco®5/16"-18 Backing Block for 3/4" & 1" Flangeds Seacock (BB-1)
    0
    # mpn4620924679
    5/16"-18 Backing Block for 3/4" & 1" Flangeds Seacock by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your...
    Flanged seacock installation is improved with the use of a backing block between the valve flange and the hullEach size fits multiple seacock sizes
    $58.78
  • Groco® - BV-Series 1" NPS Flange to 1" NPT(F) Bronze Seacock
    Groco®BV-Series 1" NPS Flange to 1" NPT(F) Bronze Seacock (BV-1000)
    0
    # mpn4620924724
    BV-Series 1" NPS Flange to 1" NPT(F) Bronze Seacock by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs...
    Tri-flange base and mount hole pattern provide easy retrofit when replacing most popular brandsPatented selectable handle rotation
    $310.13
  • Groco® - BV-Series 1-1/2" NPS Flange to 1-1/2" NPT(F) Bronze Seacock
    Groco®BV-Series 1-1/2" NPS Flange to 1-1/2" NPT(F) Bronze Seacock (BV-1500)
    0
    # mpn4620924726
    BV-Series 1-1/2" NPS Flange to 1-1/2" NPT(F) Bronze Seacock by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet...
    Tri-flange base and mount hole pattern provide easy retrofit when replacing most popular brandsPatented selectable handle rotation
    $416.33
  • Groco® - BV-Series 1-1/4" NPS Flange to 1-1/4" NPT(F) Bronze Seacock
    Groco®BV-Series 1-1/4" NPS Flange to 1-1/4" NPT(F) Bronze Seacock (BV-1250)
    0
    # mpn4620924725
    BV-Series 1-1/4" NPS Flange to 1-1/4" NPT(F) Bronze Seacock by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet...
    Tri-flange base and mount hole pattern provide easy retrofit when replacing most popular brandsPatented selectable handle rotation
    $402.07
  • Groco® - BV-Series 2" NPS Flange to 2" NPT(F) Bronze Seacock
    Groco®BV-Series 2" NPS Flange to 2" NPT(F) Bronze Seacock (BV-2000)
    0
    # mpn4620924727
    BV-Series 2" NPS Flange to 2" NPT(F) Bronze Seacock by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs...
    Tri-flange base and mount hole pattern provide easy retrofit when replacing most popular brandsPatented selectable handle rotation
    $628.66
  • Groco® - BV-Series 2-1/2" NPS Flange to 2-1/2" NPT(F) Bronze Seacock
    Groco®BV-Series 2-1/2" NPS Flange to 2-1/2" NPT(F) Bronze Seacock (BV-2500)
    0
    # mpn4620924728
    BV-Series 2-1/2" NPS Flange to 2-1/2" NPT(F) Bronze Seacock by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet...
    Tri-flange base and mount hole pattern provide easy retrofit when replacing most popular brandsPatented selectable handle rotation
    $924.08
  • Groco® - BV-Series 3" NPS Flange to 3" NPT(F) Bronze Seacock
    Groco®BV-Series 3" NPS Flange to 3" NPT(F) Bronze Seacock (BV-3000)
    0
    # mpn4620924729
    BV-Series 3" NPS Flange to 3" NPT(F) Bronze Seacock by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs...
    Tri-flange base and mount hole pattern provide easy retrofit when replacing most popular brandsPatented selectable handle rotation
    $1,792.72
  • Groco® - BV-Series 3/4" NPS Flange to 3/4" NPT(F) Bronze Seacock
    Groco®BV-Series 3/4" NPS Flange to 3/4" NPT(F) Bronze Seacock (BV-750)
    0
    # mpn4620924731
    BV-Series 3/4" NPS Flange to 3/4" NPT(F) Bronze Seacock by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your...
    Tri-flange base and mount hole pattern provide easy retrofit when replacing most popular brandsPatented selectable handle rotation
    $256.00
  • Groco® - BV-Series 4" NPS Flange to 4" NPT(F) Bronze Seacock
    Groco®BV-Series 4" NPS Flange to 4" NPT(F) Bronze Seacock (BV-4000)
    0
    # mpn4620924730
    BV-Series 4" NPS Flange to 4" NPT(F) Bronze Seacock by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs...
    Tri-flange base and mount hole pattern provide easy retrofit when replacing most popular brandsPatented selectable handle rotation
    $4,095.83
  • Groco® - CV-Series 1" NPT(F) Bronze Inline Check Valve
    Groco®CV-Series 1" NPT(F) Bronze Inline Check Valve (CV-100)
    0
    # mpn4620924737
    CV-Series 1" NPT(F) Bronze Inline Check Valve by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...
    C83600 cast bronze constructionNPT threaded ports
    $43.40
  • Groco® - CV-Series 1-1/2" NPT(F) Bronze Inline Check Valve
    Groco®CV-Series 1-1/2" NPT(F) Bronze Inline Check Valve (CV-150)
    0
    # mpn4620924739
    CV-Series 1-1/2" NPT(F) Bronze Inline Check Valve by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs...
    C83600 cast bronze constructionNPT threaded ports
    $122.78
  • Groco® - CV-Series 1-1/4" NPT(F) Bronze Inline Check Valve
    Groco®CV-Series 1-1/4" NPT(F) Bronze Inline Check Valve (CV-125)
    0
    # mpn4620924738
    CV-Series 1-1/4" NPT(F) Bronze Inline Check Valve by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs...
    C83600 cast bronze constructionNPT threaded ports
    $80.31
  • Groco® - CV-Series 1/2" NPT(F) Bronze Inline Check Valve
    Groco®CV-Series 1/2" NPT(F) Bronze Inline Check Valve (CV-50)
    0
    # mpn4620924741
    CV-Series 1/2" NPT(F) Bronze Inline Check Valve by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...
    C83600 cast bronze constructionNPT threaded ports
    $29.06
  • Groco® - CV-Series 2" NPT(F) Bronze Inline Check Valve
    Groco®CV-Series 2" NPT(F) Bronze Inline Check Valve (CV-200)
    0
    # mpn4620924740
    CV-Series 2" NPT(F) Bronze Inline Check Valve by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...
    C83600 cast bronze constructionNPT threaded ports
    $183.71
  • Groco® - CV-Series 3/4" NPT(F) Bronze Inline Check Valve
    Groco®CV-Series 3/4" NPT(F) Bronze Inline Check Valve (CV-75)
    0
    # mpn4620924742
    CV-Series 3/4" NPT(F) Bronze Inline Check Valve by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...
    C83600 cast bronze constructionNPT threaded ports
    $33.89
  • Groco® - FBV-Series 1" NPS Flange to 1" NPT(F) Bronze Seacock
    Groco®FBV-Series 1" NPS Flange to 1" NPT(F) Bronze Seacock (FBV-1000)
    0
    # mpn4620924743
    FBV-Series 1" NPS Flange to 1" NPT(F) Bronze Seacock by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your...
    Full FlowTriangular base with bolt pattern to match most popular brands makes retrofit easy
    $92.69
  • Groco® - FBV-Series 1-1/2" NPS Flange to 1-1/2" NPT(F) Bronze Seacock
    Groco®FBV-Series 1-1/2" NPS Flange to 1-1/2" NPT(F) Bronze Seacock (FBV-1500)
    0
    # mpn4620924745
    FBV-Series 1-1/2" NPS Flange to 1-1/2" NPT(F) Bronze Seacock by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet...
    Full FlowTriangular base with bolt pattern to match most popular brands makes retrofit easy
    $153.36
  • Groco® - FBV-Series 1-1/4" NPS Flange to 1-1/4" NPT(F) Bronze Seacock
    Groco®FBV-Series 1-1/4" NPS Flange to 1-1/4" NPT(F) Bronze Seacock (FBV-1250)
    0
    # mpn4620924744
    FBV-Series 1-1/4" NPS Flange to 1-1/4" NPT(F) Bronze Seacock by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet...
    Full FlowTriangular base with bolt pattern to match most popular brands makes retrofit easy
    $113.75
  • Groco® - FBV-Series 2" NPS Flange to 2" NPT(F) Bronze Seacock
    Groco®FBV-Series 2" NPS Flange to 2" NPT(F) Bronze Seacock (FBV-2000)
    0
    # mpn4620924746
    FBV-Series 2" NPS Flange to 2" NPT(F) Bronze Seacock by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your...
    Full FlowTriangular base with bolt pattern to match most popular brands makes retrofit easy
    $247.62
  • Groco® - FBV-Series 2-1/2" NPS Flange to 2-1/2" NPT(F) Bronze Seacock
    Groco®FBV-Series 2-1/2" NPS Flange to 2-1/2" NPT(F) Bronze Seacock (FBV-2500)
    0
    # mpn4620924747
    FBV-Series 2-1/2" NPS Flange to 2-1/2" NPT(F) Bronze Seacock by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet...
    Full FlowTriangular base with bolt pattern to match most popular brands makes retrofit easy
    $523.65
  • Groco® - FBV-Series 3" NPS Flange to 3" NPT(F) Bronze Seacock
    Groco®FBV-Series 3" NPS Flange to 3" NPT(F) Bronze Seacock (FBV-3000)
    0
    # mpn4620924748
    FBV-Series 3" NPS Flange to 3" NPT(F) Bronze Seacock by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your...
    Full FlowTriangular base with bolt pattern to match most popular brands makes retrofit easy
    $635.59
  • Groco® - FBV-Series 3/4" NPS Flange to 3/4" NPT(F) Bronze Seacock
    Groco®FBV-Series 3/4" NPS Flange to 3/4" NPT(F) Bronze Seacock (FBV-750)
    0
    # mpn4620924749
    FBV-Series 3/4" NPS Flange to 3/4" NPT(F) Bronze Seacock by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your...
    Full FlowTriangular base with bolt pattern to match most popular brands makes retrofit easy
    $67.40
  • Groco® - FV-Series 1/2" NPT(F) Bronze Tank Selector Valve
    Groco®FV-Series 1/2" NPT(F) Bronze Tank Selector Valve (FV-550-L)
    0
    # mpn4620924772
    FV-Series 1/2" NPT(F) Bronze Tank Selector Valve (FV-550-L) by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet...
    For fuel or waterBottom port is common. Select between four outlets
    $154.53
  • Groco® - FV-Series 1/2" NPT(F) Bronze Tank Selector Valve
    Groco®FV-Series 1/2" NPT(F) Bronze Tank Selector Valve (FV-450-X)
    0
    # mpn4620924770
    FV-Series 1/2" NPT(F) Bronze Tank Selector Valve (FV-450-X) by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet...
    For fuel or waterFour Positions: Tank-1, Tank-2, Tanks 1 & 2, Off
    $123.75
  • Groco® - IBV-Series 1" NPT(F) Bronze Inline Valve
    Groco®IBV-Series 1" NPT(F) Bronze Inline Valve (IBV-1000)
    0
    # mpn4620924803
    IBV-Series 1" NPT(F) Bronze Inline Valve (IBV-1000) by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs...
    1-1/4" sizes and larger include a grease zerk fitting for lubrication (use only with the valve in the open position) or for drainingPatented selectable handle rotation
    $58.96
  • Groco® - IBV-Series 1" NPT(F) Stainless Steel Inline Valve
    Groco®IBV-Series 1" NPT(F) Stainless Steel Inline Valve (IBV-1000-S)
    0
    # mpn4620924805
    IBV-Series 1" NPT(F) Stainless Steel Inline Valve (IBV-1000-S) by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet...
    1-1/4" sizes and larger include a grease zerk fitting for lubrication (use only with the valve in the open position) or for drainingPatented selectable handle rotation
    $76.82
  • Groco® - IBV-Series 1-1/2" NPT(F) Bronze Inline Valve
    Groco®IBV-Series 1-1/2" NPT(F) Bronze Inline Valve (IBV-1500)
    0
    # mpn4620924809
    IBV-Series 1-1/2" NPT(F) Bronze Inline Valve (IBV-1500) by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your...
    1-1/4" sizes and larger include a grease zerk fitting for lubrication (use only with the valve in the open position) or for drainingPatented selectable handle rotation
    $99.47
  • Groco® - IBV-Series 1-1/2" NPT(F) Stainless Steel Inline Valve
    Groco®IBV-Series 1-1/2" NPT(F) Stainless Steel Inline Valve (IBV-1500-S)
    0
    # mpn4620924811
    IBV-Series 1-1/2" NPT(F) Stainless Steel Inline Valve (IBV-1500-S) by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will...
    1-1/4" sizes and larger include a grease zerk fitting for lubrication (use only with the valve in the open position) or for drainingPatented selectable handle rotation
    $153.47
  • Groco® - IBV-Series 1-1/4" BSPP(F) Bronze Inline Valve
    Groco®IBV-Series 1-1/4" BSPP(F) Bronze Inline Valve (IBV-1250 BSPP)
    0
    # mpn4620924807
    IBV-Series 1-1/4" BSPP(F) Bronze Inline Valve by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...
    1-1/4" sizes and larger include a grease zerk fitting for lubrication (use only with the valve in the open position) or for drainingPatented selectable handle rotation
    $95.08




Are you an avid boater looking for hardware that is a cut above the rest? Then Groco is the only name you need to know. The company was born in Baltimore in 1918, the time of the industrial boom when marine and automotive industries were growing extremely fast. The company’s founder, Angus Roy Gross, Sr., had a keen eye on innovation. He had many patents, the most distinctive of which were an ice shaver, combination lever, blow torch, and much more. However, in the late 1920s, Groco decided to focus on the marine industry. Now the company is recognized for its superior-quality water pumps, valves, fittings, hull scoops, raw water strainers, water pressure systems, and many other related marine products.

At Groco, they have always been committed to staying on the cutting edge of product development. From manual machining equipment many years ago to state-of-the-art CNC machining technology, Groco is constantly growing and improving to ensure ultimate customer satisfaction. Featuring a solid construction, Groco marine parts are proven to deliver outstanding performance and reliability. They will keep your vessel operating at its peak, improving your boating experience. Groco uses the finest materials while making their underwater hardware to guarantee it will hold up to the most demanding marine conditions. Whether you opt for stainless steel fittings or an aluminum hull scoop, rest assured you will make your engine room or hull look at its best for years to come.

Groco’s tradition of creating innovative designs is the main factor that distinguishes the company from the competition and allows it to take its place among marine industry leaders. Although the company has gained worldwide popularity for its pumps and hardware, it offers products that feature far more sophisticated designs. Tired of those clogged strainers in hard-to-reach places? Groco has you covered with top-notch strainers that can clean themselves on specific intervals. And how about a waste treatment system that will allow you to discharge waste legally in almost any place you are? Don’t want to go to the engine room to open or close seacocks? Get Groco E-Valve to access seacocks with a push of a button. It will allow you to have full control of all your valves, exercise all valves, view valve status immediately, and much more. Rely on Groco to make your time on the water safer and more comfortable!

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