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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Sort by:
- Featured
- Most relevant
- Best selling
- Alphabetically, A-Z
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- Date, old to new
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Vendor:Jabsco
Jabsco 4" 250 CFM Flexmount Blower - 12V [35440-0000]
- £154.79
£218.40- £154.79
- Unit price
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Heavy Duty Flexmount BlowerDC 250 CFM Flexmount 4" Blower Tough Reinforced Plastic Housing Universal Flexmount Bracket permits outlet to face any direction Slip-On Inlet Ducting Connection Efficient High Volume Air Flow Low-Current Draw Corrosion-Resistant Materials Throughout N.M.M.A Type Accepted Meets USCG Regulations 183.410 and...- £154.79
£218.40- £154.79
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Vendor:Raritan
Raritan 6-Gallon Hot Water Heater w/Heat Exchanger - 120v [170611]
- £982.44
£1,555.66- £982.44
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1700 Series Water Heater120v6 GallonWith Engine Heat ExchangerThe "1700 Series" water heater provides hot water for galley and shower. Dense foam insulation provides better and longer heat retention than traditional fiberglass. The tank itself is protected by a 75 PSI T& P ( temperature...- £982.44
£1,555.66- £982.44
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Vendor:Trident Marine
Trident Marine 1-1/4" Flex Marine Wet Exhaust Water Hose - Black - Sold by the Foot [100-1146-FT]
- £9.19
£15.32- £9.19
- Unit price
- / per
1-1/4" Flex Marine Wet Exhaust & Water Hose - Black - Sold by the FootTrident Flex wet exhaust hose for longer bent connections. In smaller i.d.s for engine intake, critical water, drain, scupper bilge & sanitation uses. Resists heat, ozone, exhaust, panting, and collapse....- £9.19
£15.32- £9.19
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Vendor:Johnson Pump
Johnson Pump 1000GPH - 1250GPH Motor Cartridge Only [28512]
- £36.01
£60.66- £36.01
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Spare Motor for CartridgeUpgrade the output of your bilge pump in a matter of a few minutes by replacing the cartridge. Cleaning debris from the impeller has never been simpler or easier. Specifications: Type: Replacement Motors Box Dimensions: 4"H x 6"W x 7"L WT:...- £36.01
£60.66- £36.01
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Vendor:Whale Marine
Whale Clamping Ring Kit f/Gulper 220 [AS1562]
- £17.62
£22.51- £17.62
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Clamping Ring Kit for Gulper 220Features: Includes both halves of the clamping ring and 2 screws Specifically for Whale Gulper 220 Shower/Waste Pump- £17.62
£22.51- £17.62
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Vendor:Johnson Pump
Johnson Pump Heavy Duty Bilge Pump 4000 GPH - 24V [40084]
- £157.09
£275.40- £157.09
- Unit price
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Heavy Duty Bilge Pump 4000 GPH - 24VFeatures: Limited 1 Year Warranty Capacities of 1600, 2200, or 4000 GPH Liquid-cooled, 12-pole motor with double ball bearings for extended service life The shaft of stainless steel (SS2343) The impeller is carefully designed and tested to...- £157.09
£275.40- £157.09
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Vendor:Johnson Pump
Johnson Pump Wash Down Flexible Hose - 25 [09-60616]
- £26.81
£44.50- £26.81
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Wash Down Flexible Hose - 25'Features: Expandable X-hose flexible hose Easy to use, portable, folds up after use, easy to stow away Handles wash down pump pressure Size: 25' Specifications: Type: Tools & Accessories Box Dimensions: 3"H x 8"W x 12"L WT: 0.98 lbs...- £26.81
£44.50- £26.81
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Vendor:Johnson Pump
Johnson Pump 750 GPH Motor Cartridge Only [28572]
- £32.18
£53.19- £32.18
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Spare Motor for CartridgeUpgrade the output of your bilge pump in a matter of a few minutes by replacing the cartridge. Cleaning debris from the impeller has never been simpler or easier. Specifications: Type: Replacement Motors Box Dimensions: 4"H x 6"W x 7"L WT:...- £32.18
£53.19- £32.18
- Unit price
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Vendor:Shurflo by Pentair
Shurflo by Pentair PIRANHA Straight Port Aerator 600 Livewell Pump - 12 VDC, 600 GPH [357-012-10]
- £45.97
£72.60- £45.97
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PIRANHA™ Straight Port Aerator 600 Livewell Pump - 12 VDC, 600 GPHSmart. Reliable. Attractive. Efficient. Our tough density nylon housing and heavy duty water cooled motor give the SHURFLO livewell pumps unparalleled reliability. Anti-airlock feature allows the pump to clear trapped air in rough...- £45.97
£72.60- £45.97
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Vendor:GROCO
GROCO Heavy Duty Positive Displacement Vane Pump - 12V [SPO-60-N 12V]
- £299.63
£468.23- £299.63
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Heavy Duty Positive Displacement Vane Pump - 12VGROCO Vane Pumps are self-priming and are capable of operation in either direction. Relatively high flow (more than gear pumps) makes them suitable for general purpose duties such as deck-wash, bilge pumping (filtered inlet), fuel transfer, ballast...- £299.63
£468.23- £299.63
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Vendor:GROCO
GROCO 1-1/2" Bronze Tri-Flanged Ball Valve/Seacock [FBV-1500]
- £117.24
£175.49- £117.24
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1-1/2" Bronze Tri-Flanged Ball Valve/SeacockFeatures: 1-1/4" sizes and larger include one grease zerk fitting for lubrication (use only with the valve in the open position), and one drain plug The zerk can also be used for draining Field reversible handle allows you to select...- £117.24
£175.49- £117.24
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Vendor:Rule
Rule 1100 Replacement Motor F/ Tournament Series Livewell Pump [47DR]
- £36.78
£49.80- £36.78
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1100 Replacement Motor F/ Tournament Series Livewell PumpRule 47DR 12v 1100 GPH Replacement Motor for Rule 405FC Livewell - Baitwell pump.WARNING: This product can expose you to chemicals including STYRENE which is known to the State of California to cause cancer. For more information...- £36.78
£49.80- £36.78
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Vendor:Johnson Pump
Johnson Pump Talulah High Flow Ballast Pump Impeller Kit [09-849P-2]
- £33.71
£55.72- £33.71
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Talulah High Flow Ballast Pump Impeller KitFor the well-being of your boat engine your water cooling pump must be able to supply a minimum specified continuous flow of cooling water. The flexible impeller in your pump, which provides this pumping action, is a wear part....- £33.71
£55.72- £33.71
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Vendor:Johnson Pump
Johnson Pump Fresh Water Filter Strainer Cover w/O-Ring Assembly [09-36012]
- £6.89
£10.45- £6.89
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Fresh Water Filter Strainer Cover with O-Ring AssemblyFeatures: Strainer Cover For filters used with freshwater pumps- £6.89
£10.45- £6.89
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Vendor:Trident Marine
Trident Marine 1" Flex Marine Wet Exhaust Water Hose - Black - Sold by the Foot [100-1006-FT]
- £9.19
£15.32- £9.19
- Unit price
- / per
1" Flex Marine Wet Exhaust & Water Hose - Black - Sold by the FootTrident Flex wet exhaust hose for longer bent connections. In smaller I.D.s for engine intake, critical water, drain, scupper bilge & sanitation uses. Resists heat, ozone, exhaust, panting, and collapse....- £9.19
£15.32- £9.19
- Unit price
- / per
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Vendor:Jabsco
Jabsco Sensor Max II 5 GPM Variable Speed Freshwater Pump - 12V, 40 PSI [V50AJ-115N-3A]
- £311.12
£436.80- £311.12
- Unit price
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Sensor Max II 5 GPM Variable Speed Freshwater Pump - 12V, 40 PSIExceptional performance and life for total peace of mind with your onboard water system. The Sensor-Max II is the most sophisticated freshwater delivery pump featuring variable speed technology. The Sensor-Max II incorporates...- £311.12
£436.80- £311.12
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Vendor:BILGE-B-DRY
BILGE-B-DRY Triple Pump - 12VDC [BBD-2025-123]
- £390.07
£397.73- £390.07
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Triple Pump - 12VDCBILGE-B-DRY is the world’s only Smart Device enabled Dry Bilge System on the market!Enjoy simple installation and customized scheduling control at your fingertips with our Mobile App for Apple or Android devices. Due to size and placement, traditional bilge pumps cannot...- £390.07
£397.73- £390.07
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Vendor:Johnson Pump
Johnson Pump Bilge Switched Automatic Float Switch - 15amp Max [26014]
- £16.85
£27.40- £16.85
- Unit price
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Automatic Switch AS888For full automatic bilge pumping operation, connect the automatic switch to your bilge pump. The AS888 automatic switch has a time-proven micro switch without mercury. When water exceeds the acceptable level, the pump is turned on by a rolling steel ball, which...- £16.85
£27.40- £16.85
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Vendor:Shurflo by Pentair
Shurflo by Pentair PRO BAITMASTER II Livewell Pump - 12 VDC - 4.0 GPM [4648-153-E07]
- £272.04
£455.12- £272.04
- Unit price
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PRO BAITMASTER™ II Livewell Pump - 12 VDC - 4.0 GPMThe SHURFLO PRO BAITMASTER II heavy duty livewell/washdown pump is excellent for live-well or washdown applications in harsh marine environments. The seamless motor shell and sealed switch protects the pump from splashed liquids. Self-priming...- £272.04
£455.12- £272.04
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Vendor:GROCO
GROCO 1-1/2" NPS NPT Combo Bronze Thru-Hull Fitting w/Nut [TH-1500-W]
- £39.84
£59.77- £39.84
- Unit price
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1-1/2" NPS NPT Combo Bronze Thru-Hull Fitting with NutFeatures: NPSM / NPT combination thread C83600 Bronze Sizes from 1/2" to 5" UL Listed 647B Available with (-W) or without nut (-L) BSPP and Stainless Steel models available Specifications: Hose Size: 1-1/2" Material: Bronze Box Dimensions: 3"H...- £39.84
£59.77- £39.84
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![GROCO 1-1/2" Bronze Tri-Flanged Ball Valve/Seacock [FBV-1500]](http://www.dbmarinesupplies.com/cdn/shop/files/74388XL_533x.jpg?v=1682727769)
![BILGE-B-DRY Triple Pump - 12VDC [BBD-2025-123]](http://www.dbmarinesupplies.com/cdn/shop/files/107840XL_533x.jpg?v=1738973343)