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Marine Plumbing & Ventilation

Marine Plumbing & Ventilation systems are essential for keeping your vessel comfortable, efficient, and operating at its best in every marine environment. Designed to withstand moisture, vibration, and harsh saltwater conditions, today's plumbing and ventilation solutions deliver dependable performance and long-lasting reliability you can count on. From bilge pumps, freshwater pumps, hoses, fittings, and marine sanitation systems to blowers, vents, and ventilation accessories, the right equipment helps maintain proper water flow, improve air circulation, and protect critical onboard systems. Whether you're replacing worn components or upgrading your boat with modern plumbing and ventilation equipment, premium marine products provide the performance trusted by boaters and marine professionals alike. Explore our selection of marine plumbing and ventilation solutions and let our experts help you find the right products to keep your vessel running smoothly on every adventure.

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  • Attwood Automatic Float Switch - 12V & 24V [4202-7]Attwood Automatic Float Switch - 12V & 24V [4202-7]
    Attwood Marine

    Attwood Automatic Float Switch - 12V & 24V [4202-7]

    £20.81
    £27.88
    £20.81
    Float SwitchPart #: 4202-7Converts bilge pumps to fully automatic operation. Maximum amp draw is 12 amps (at 12-volt D.C.) or 6-amps (at 24-Volts D.C.). Features a compact, low profile design that mounts on any surface from a horizontal up to a 24x angle. Incorporates...
    £20.81
    £27.88
    £20.81
  • Raritan Motor Shaft Seal Replacement [31-102]
    Raritan

    Raritan Motor Shaft Seal Replacement [31-102]

    £19.32
    £26.02
    £19.32
    Motor Shaft Seal ReplacementRaritan's Motor Shaft Seal is a replacement toilet part.Raritan manufactures equipment for pleasure boats throughout the world. Products include marine toilets, waste treatment systems, icemakers and water heaters. Committed to the environment and preserving sea life, Raritan designs products to help...
    £19.32
    £26.02
    £19.32
  • Raritan Raw Water Strainer [RWS]
    Raritan

    Raritan Raw Water Strainer [RWS]

    £119.70
    £167.29
    £119.70
    Raw Water StrainerThe Raritan Raw Water Strainer is an inexpensive way to protect your engine, generators, AC units and other equipment that requires outside water from dangerous debris. Each Raritan unit is pressure tested at the factory prior to shipping. The strong clear plastic body makes...
    £119.70
    £167.29
    £119.70
  • Raritan Inlet Valve f/PHII & PHEII [1203BW]
    Raritan

    Raritan Inlet Valve f/PHII & PHEII [1203BW]

    £17.09
    £23.79
    £17.09
    Inlet ValveRaritan's Inlet Valve includes O-Rings and is made specifically for Raritan's PHII and PHEII.Raritan manufactures equipment for pleasure boats throughout the world. Products include marine toilets, waste treatment systems, icemakers and water heaters. Committed to the environment and preserving sea life, Raritan designs...
    £17.09
    £23.79
    £17.09
  • Trident Marine 3/4" x 50' HD Bilge Livewell Hose Clear w/Black Helix By The Foot [144-0346-FT]
    Trident Marine

    Trident Marine 3/4" x 50' HD Bilge Livewell Hose Clear w/Black Helix By The Foot [144-0346-FT]

    £2.22
    £7.43
    £2.22
    3/4" x 50' HD Bilge & Livewell Hose Clear with Black Helix By The FootHeavy-duty bilge, drain, and live well hose. Clear vinyl (FDA) corrugated with black hard PVC helix and smooth tube. Provides exceptional flexibility and bend radius. *NOT RECOMMENDED FOR BELOW-WATERLINE THRU-HULL...
    £2.22
    £7.43
    £2.22
  • Attwood Service Kit f/S500 S800 Bilge Pumps [AK5505-7]
    Attwood Marine

    Attwood Service Kit f/S500 S800 Bilge Pumps [AK5505-7]

    £11.89
    £12.89
    £11.89
    Service Kit for S500 & S800 Bilge PumpsSpecifications: Outlet Diameter: 3/4" (19mm) & 1" (25mm) Compatible with Tsunami Bilge Mk2 Kit Includes (1 each): 90-degree outlet Straight outlet Washer Non-return/check valve WARNING: This product can expose you to chemicals which are known to the...
    £11.89
    £12.89
    £11.89
  • Whale Gulper 320 High Capacity Waste/Bilge Pump 24V [BP2054]
    Whale Marine

    Whale Gulper 320 High Capacity Waste/Bilge Pump 24V [BP2054]

    £150.19
    £220.52
    £150.19
    Gulper 320 High Capacity Waste/Bilge Pump 24VHigh Capacity Waste Pump- Fast Drainage and space saving on boardNo clog, no filter waste pump built on more than a decade of market leading pump technologyGulper 320 - the easy access remote mount bilge pump designed to...
    £150.19
    £220.52
    £150.19
  • Attwood Turbo 4000 Series II Water-Resistant, In-Line Blower - 12V - White [1749-4]Attwood Turbo 4000 Series II Water-Resistant, In-Line Blower - 12V - White [1749-4]
    Attwood Marine

    Attwood Turbo 4000 Series II Water-Resistant, In-Line Blower - 12V - White [1749-4]

    £25.27
    £32.48
    £25.27
    Turbo 4000 Series II In-Line BlowerPart #: 1749-4Attwood's improved Turbo 4000 Series II sets the standard for in-line blower performance. Utilizing advanced fan blade design techniques, Attwood has developed a blower system that matches air flow of existing in-line blowers at a significantly reduced...
    £25.27
    £32.48
    £25.27
  • Jabsco Treatment System Relay Box - 12V-38XXX Series [38116-0000]
    Jabsco

    Jabsco Treatment System Relay Box - 12V-38XXX Series [38116-0000]

    £260.97
    £368.04
    £260.97
    Treatment System Relay Box - 12V-38XXX SeriesThis black treatment system relay box is part of Jabsco’s Waste Management System, 12V-38XXX Series.Features:Relay Box Color: Black
    £260.97
    £368.04
    £260.97
  • Johnson Pump 2200GPH Ultima Combo Auto Bilge Pump - 12V [02274-001]
    Johnson Pump

    Johnson Pump 2200GPH Ultima Combo Auto Bilge Pump - 12V [02274-001]

    £126.39
    £212.64
    £126.39
    Automatic Submersible Bilge Pump - Ultima Switch02274-001 Heavy-Duty, high-performance pump Exceeds the tough demands of commercial and recreational duty Liquid Cooled 16-Pole motor with double ball bearings Lip Seal design construction Prewired with automatic float switch(with Manual Over-ride Operation) Optional and removable check valve...
    £126.39
    £212.64
    £126.39
  • Shurflo by Pentair Upper Assembly Replacement f/4248/4258 Series Pro Blaster II Deluxe 4.0/5.0 Washdown Pumps [94-804-02]Shurflo by Pentair Upper Assembly Replacement f/4248/4258 Series Pro Blaster II Deluxe 4.0/5.0 Washdown Pumps [94-804-02]
    Shurflo by Pentair

    Shurflo by Pentair Upper Assembly Replacement f/4248/4258 Series Pro Blaster II Deluxe 4.0/5.0 Washdown Pumps [94-804-02]

    £39.40
    £60.87
    £39.40
    Upper Assembly Replacement for 4248/4258 Series Pro Blaster II Deluxe 4.0/5.0 Washdown PumpsThis Shurflo upper assembly replacement is for the 4248/4258 Series Pro Blaster II Deluxe 4.0/5.0 washdown pumps listed below: Shurflo Pro Blaster II Deluxe 4.0 (4248-153-A09 [4248-153-E09]) Shurflo Pro Blaster II Deluxe...
    £39.40
    £60.87
    £39.40
  • Shurflo by Pentair Twist-On Water Strainer - 1/2" Pipe Inlet - Clear Bowl [255-313]
    Shurflo by Pentair

    Shurflo by Pentair Twist-On Water Strainer - 1/2" Pipe Inlet - Clear Bowl [255-313]

    £11.15
    £15.11
    £11.15
    Twist-On Water Strainer - 1/2" Pipe Inlet - Clear BowlClean, clear economical strainers eliminate unnecessary repairs by keeping debris and other particles out of the pump. Screws directly on the pumphead. Transparent design shows when it is time to clean the bowl. Easy disassembly,...
    £11.15
    £15.11
    £11.15
  • Shurflo by Pentair High Flow Livewell 2000 Pump - 12 VDC, 2000 GPH [358-011-10]
    Shurflo by Pentair

    Shurflo by Pentair High Flow Livewell 2000 Pump - 12 VDC, 2000 GPH [358-011-10]

    £133.08
    £216.80
    £133.08
    High Flow Livewell 2000 Pump - 12 VDC, 2000 GPHHeavy duty and built to last. SHURFLO 2000 GPH livewell pump is built to withstand the harsh marine environment. Submersible and rated for continuous duty, SHURFLO's bilge pump is equipped with an anti-airlock feature to...
    £133.08
    £216.80
    £133.08
  • Shurflo by Pentair 3/4" Raw Water Strainer - 50 Mesh Screen [253-220-01]
    Shurflo by Pentair

    Shurflo by Pentair 3/4" Raw Water Strainer - 50 Mesh Screen [253-220-01]

    £32.71
    £50.09
    £32.71
    3/4" Water Strainer - 50 Mesh ScreenSHURFLO's family of Raw Water Strainers are built to keep your bait tank, livewell and washdown pumps protected from harmful debris. The Raw Water Strainer features a clear twist off bowl and removable stainless steel screen, which allows...
    £32.71
    £50.09
    £32.71
  • TRAC Outdoors Portable Bilge Pump [69341]
    TRAC Outdoors

    TRAC Outdoors Portable Bilge Pump [69341]

    £22.30
    £26.76
    £22.30
    Portable Bilge PumpSelf-priming, centrifugal pump.  Ideal for jon boats, utility boats, dinghies, inflatable boats, and all other small watercraft.  Also great for removing fluids from non-marine applications.Features: Powered by 3 D-cell batteries (not included) A wide strainer base adds stability Suction cup or screw...
    £22.30
    £26.76
    £22.30
  • Scandvik Black Cap Container f/Scandvik Recessed Shower [10262P]
    Scandvik

    Scandvik Black Cap Container f/Scandvik Recessed Shower [10262P]

    £11.89
    £17.10
    £11.89
    Black Cap & Container for Scandvik Recessed ShowerThis part is a replacement cup and cap for horizontally mounted recessed showers.Features: These caps have a shower symbol on top Black cap and cup Specifications:Mounting Hole: 2-1/4 in.*The "P" within the part number indicates retail packaging...
    £11.89
    £17.10
    £11.89
  • Johnson Pump 1000 GPH Bilge Pump 3/4" 12V Dura Ports [32903]
    Johnson Pump

    Johnson Pump 1000 GPH Bilge Pump 3/4" 12V Dura Ports [32903]

    £34.94
    £58.27
    £34.94
    Cartridge Bilge Pumps 1000 GPHThe 1000 GPH incorporates some of the most advanced features in the industry, features developed from service in a wide variety of uses including racing, cruising, sport fishing, and demanding commercial duties. We have improved the design with easy-to-install Dura-Port...
    £34.94
    £58.27
    £34.94
  • Johnson Pump Standard Electric Compact Macerator Style 12V [80-47435-01]
    Johnson Pump

    Johnson Pump Standard Electric Compact Macerator Style 12V [80-47435-01]

    £241.64
    £425.45
    £241.64
    Standard Electric Compact Macerator Style - 12VThe Johnson Pump Aqua Marine Toilet has been designed to meet virtually every conceivable lavatory installation situation onboard.Priced competitively, the fine finish and well thought-through design of these toilets is remarkable. Made from white vitreous porcelain, and with...
    £241.64
    £425.45
    £241.64
  • Johnson Pump Black Basket for 4000 GPH [54274PK]
    Johnson Pump

    Johnson Pump Black Basket for 4000 GPH [54274PK]

    £8.17
    £12.49
    £8.17
    Black Basket for 4000 GPHReplacement Basket for 4000 GPH Pumps Specifications: Type: Misc Box Dimensions: 2"H x 5"W x 5"L WT: 0.2 lbs UPC: 729321031202
    £8.17
    £12.49
    £8.17
  • Johnson Pump 3" In-Line Blower - 158CFM - 12V [66302]
    Johnson Pump

    Johnson Pump 3" In-Line Blower - 158CFM - 12V [66302]

    £31.96
    £53.16
    £31.96
    3" In-Line BlowerInlet/Outlet - 3"CFM - 158 Johnson Pump in-line blowers provide ventilation for bilges, engine compartments, galleys, and heads. Made from high quality ABS plastic construction, corrosion resistant motors, and premium electrical connections completes these blowers Five blade, quiet, highly efficient, and reliable...
    £31.96
    £53.16
    £31.96