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Fittings

Marine Fittings

Marine fittings are essential components for connecting, securing, and routing water, fuel, and plumbing systems on boats. Built for durability and corrosion resistance, high-quality fittings ensure safe, leak-free operation for both recreational and professional vessels.

Durable & Reliable Marine Connections

  • Marine-grade construction for corrosion resistance and long life
  • Wide selection for water, fuel, and plumbing applications
  • Easy installation and maintenance with professional-grade designs

Trusted Brands

Top marine fittings brands include Albin Group, Attwood Marine, Beckson Marine, Dometic, Forespar Performance Products, GROCO, Jabsco, Johnson Pump, Perko, Raritan, Rule, Scandvik, Sea-Dog, Seaview, Shurflo by Pentair, T-H Marine Supplies, Viega, Whitecap and more for professional reliability.

Related Marine Categories

Marine Plumbing & Ventilation, Hose, Thru-Hull Fittings, Marine Sanitation

Why Buy Marine Fittings from MarineWaze

  • Marine-grade, corrosion-resistant fittings for safe and reliable plumbing
  • Trusted brands for long-lasting performance and leak-free connections
  • Expert support for installation, maintenance, and system upgrades
  • Product
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  • GROCO 1/2" 5-Port Tank Selector Valve [FV-550-L]

    GROCO 1/2" 5-Port Tank Selector Valve [FV-550-L]

    MSRP: $180.00
    $119.99
    1/2" 5-Port Tank Selector ValveFeatures:For fuel or waterBottom port is commonSelect between four outletsFull 1/2” flowAudible “click” at each handle positionFor thru panel mountingC83600 bronze construction...
    MSRP: $180.00
    $119.99
    Qty in Cart: 0
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    MSRP: $180.00
    $119.99
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  • GROCO 1/2" 4-Port Tank Selector Valve [FV-450-X]

    GROCO 1/2" 4-Port Tank Selector Valve [FV-450-X]

    MSRP: $138.00
    $94.99
    1/2" 4-Port Tank Selector ValveFeatures:For fuel or waterFour Positions: Tank-1, Tank-2, Tanks 1 & 2, OffFull 1/2” flowAudible “click” at each handle positionFor thru panel mountingC83600 bronze constructionAvailable separately or...
    MSRP: $138.00
    $94.99
    Qty in Cart: 0
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    MSRP: $138.00
    $94.99
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  • GROCO 1/2" NPT 90 Stainless Steel Fuel Valve [FV-590-S]

    GROCO 1/2" NPT 90 Stainless Steel Fuel Valve [FV-590-S]

    MSRP: $49.00
    $34.99
    1/2" NPT 90° Stainless Steel Fuel ValveFeatures:Compact design90° flow path1/2" NPT male and female portsUse FV-590 (Brass) for fiberglass tanksUse FV-590-S (316SS) with aluminum or stainless steel tanks Specifications:Construction: Stainless...
    MSRP: $49.00
    $34.99
    Qty in Cart: 0
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    MSRP: $49.00
    $34.99
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  • GROCO 1/2" NPT 90 Bronze Fuel Valve [FV-590]

    GROCO 1/2" NPT 90 Bronze Fuel Valve [FV-590]

    MSRP: $31.00
    $23.99
    1/2" NPT 90° Bronze Fuel ValveFeatures:Compact design90° flow path1/2" NPT male and female portsUse FV-590 (Brass) for fiberglass tanksUse FV-590-S (316SS) with aluminum or stainless steel tanks Specifications:Construction: BronzeBox Dimensions:...
    MSRP: $31.00
    $23.99
    Qty in Cart: 0
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    MSRP: $31.00
    $23.99
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  • GROCO 3/4" NPT Bronze Inline Fuel Valve [FV-750]

    GROCO 3/4" NPT Bronze Inline Fuel Valve [FV-750]

    MSRP: $53.00
    $42.99
    3/4" NPT Bronze Inline Fuel ValveFeatures:Selectable handle rotationFull flowMount foot includedC83600 bronze constructionStainless steel handle and hardware400 WOGPTFE seats and sealsUL listed for fuel or water Specifications:Construction: BronzeBox...
    MSRP: $53.00
    $42.99
    Qty in Cart: 0
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    MSRP: $53.00
    $42.99
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  • GROCO 1/2" NPT Bronze Inline Fuel Valve [FV-500]

    GROCO 1/2" NPT Bronze Inline Fuel Valve [FV-500]

    MSRP: $44.00
    $36.99
    1/2" NPT Bronze Inline Fuel ValveFeatures:Selectable handle rotationFull flowMount foot includedC83600 bronze constructionStainless steel handle and hardware400 WOGPTFE seats and sealsUL listed for fuel or water Specifications:Construction: BronzeBox...
    MSRP: $44.00
    $36.99
    Qty in Cart: 0
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    MSRP: $44.00
    $36.99
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  • GROCO Fuel Valve 3/8" NPT Bronze [FV-375]

    GROCO Fuel Valve 3/8" NPT Bronze [FV-375]

    MSRP: $27.00
    $21.99
    3/8" NPT Bronze Inline Fuel ValveFeatures:Selectable handle rotationFull flowMount foot includedC83600 bronze constructionStainless steel handle and hardware400 WOGPTFE seats and sealsUL listed for fuel or water Specifications:Construction: BronzeBox...
    MSRP: $27.00
    $21.99
    Qty in Cart: 0
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    MSRP: $27.00
    $21.99
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  • GROCO 1/4" NPT Bronze Inline Fuel Valve [FV-250]

    GROCO 1/4" NPT Bronze Inline Fuel Valve [FV-250]

    MSRP: $27.00
    $21.99
    1/4" NPT Bronze Inline Fuel ValveFeatures:Selectable handle rotationFull flowMount foot includedC83600 bronze constructionStainless steel handle and hardware400 WOGPTFE seats and sealsUL listed for fuel or water Specifications:Construction: BronzeBox...
    MSRP: $27.00
    $21.99
    Qty in Cart: 0
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    MSRP: $27.00
    $21.99
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  • GROCO 1" Bronze In-Line Check Valve [CV-100]

    GROCO 1" Bronze In-Line Check Valve [CV-100]

    MSRP: $52.00
    $41.99
    1" Bronze In-Line Check ValveFeatures:C83600 cast bronze constructionNPT threaded ports1/2" - 2" sizesSuitable for use with diesel fuel or gasoline Specifications:Construction: BronzeBox Dimensions: 4"H x 4"W x 5"L WT: 0.9 lbsUPC:...
    MSRP: $52.00
    $41.99
    Qty in Cart: 0
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    MSRP: $52.00
    $41.99
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  • GROCO 3/4" Bronze In-Line Check Valve [CV-75]

    GROCO 3/4" Bronze In-Line Check Valve [CV-75]

    MSRP: $39.00
    $28.99
    3/4" Bronze In-Line Check ValveFeatures:C83600 cast bronze constructionNPT threaded ports1/2" - 2" sizesSuitable for use with diesel fuel or gasoline Specifications:Construction: BronzeBox Dimensions: 3"H x 3"W x 4"L WT: 0.55 lbsUPC:...
    MSRP: $39.00
    $28.99
    Qty in Cart: 0
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    MSRP: $39.00
    $28.99
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  • GROCO 1/2" Bronze In-Line Check Valve [CV-50]

    GROCO 1/2" Bronze In-Line Check Valve [CV-50]

    MSRP: $33.00
    $25.99
    1/2" Bronze In-Line Check ValveFeatures:C83600 cast bronze constructionNPT threaded ports1/2" - 2" sizesSuitable for use with diesel fuel or gasoline Specifications:Construction: BronzeBox Dimensions: 3"H x 3"W x 4"L WT: 0.45 lbsUPC:...
    MSRP: $33.00
    $25.99
    Qty in Cart: 0
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    MSRP: $33.00
    $25.99
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  • GROCO Perforated Hull Strainer w\/Access Door 3" Max Thru-Hull [APHS-3000-1]

    GROCO Perforated Hull Strainer w/Access Door 3" Max Thru-Hull [APHS-3000-1]

    MSRP: $555.00
    $342.99
    Perforated Hull Strainer with Access Door 3" Max Thru-HullFeatures:Access door design allows easy access to Thru HullsC84400 bronze body and doorCast filter slotsPressure relief holes in door casting Specifications:Construction: BronzeBox Dimensions:...
    MSRP: $555.00
    $342.99
    Qty in Cart: 0
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    MSRP: $555.00
    $342.99
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