Marine plumbing fittings are essential components for maintaining reliable water flow and connections on boats. These fittings, including pipe to hose adapters, hose barbs, and thru-hull fittings, ensure secure and leak-resistant plumbing systems for onboard freshwater, fuel, and drainage applications. Marine plumbing fittings also include various pipe fitting and drain components that contribute to a well-functioning onboard system. High quality hardware, such as threaded connectors and barbed fittings, ensures secure and efficient water flow for drainage and supply lines. Regular replacement of worn or corroded fittings is essential to maintain the integrity of the plumbing system, preventing leaks and ensuring long-term reliability in marine environments.
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1-2 weeks delivery time The TruDesign White Long Domed Skin Fittings range includes extended-length composite through hull fittings with 140 mm body length for marine plumbing systems above and below the waterline. Manufactured from corrosion-resistant composite material, these white domed fittings provide lightweight installation, high structural strength, and reliable long-term performance for marine intake and discharge applications.
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$ 18.17
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1-2 weeks delivery time The TruDesign Load Bearing Collars ABYC H-27 range is designed to reinforce TruDesign skin fitting and ball valve assemblies for compliance with North American ABYC H-27 standards. These composite reinforcement collars support assemblies subjected to 500 lb (227 kg) static loads and are suitable for marine plumbing systems using 1/2" to 2" ball valves. Available in Small, Medium, and Large versions for different valve sizes.
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$ 25.53
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1-2 weeks delivery time The TruDesign Skin Fitting Install Tools range is designed for single-person installation of TruDesign skin fittings from 3/4" to 2". Manufactured in New Zealand from glass-reinforced nylon composite, these installation tools securely hold standard domed and recessed through hull fittings during tightening and simplify the application of sealant or epoxy while keeping work areas clean. Not suitable for TruDesign skin fittings with tails.
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$ 4.26
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1-2 weeks delivery time The TruDesign Black Skin Fittings with Hose Tails range includes composite through hull fittings with integrated hose barbs for above-waterline marine plumbing systems. Manufactured from glass-reinforced nylon composite, these lightweight black fittings provide corrosion-free installation and reliable hose connection performance for onboard water transfer applications. Available in sizes from 1/2" x 13 mm to 2" x 50 mm, including 1/2" x 16 mm and 1" x 28 mm versions.
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$ 14.85
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1-2 weeks delivery time The TruDesign White Skin Fittings with Hose Tails range includes composite through hull fittings with integrated hose barbs for above-waterline marine plumbing systems. Manufactured from glass-reinforced nylon composite, these lightweight white fittings provide corrosion-free installation and reliable hose connection performance for onboard water transfer applications. Available in sizes from 1/2" x 13 mm to 2" x 50 mm, including 1/2" x 16 mm and 1" x 28 mm versions.
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$ 11.38
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1-2 weeks delivery time The TruDesign Black Intake Strainers range includes composite marine intake strainers in oval and round configurations for protecting onboard water intake systems from debris and foreign objects. Manufactured in New Zealand from corrosion-resistant composite material, these black strainers are suitable for marine engine cooling and water intake systems and can be painted with antifouling coatings without corrosion concerns.
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$ 6.54
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1-2 weeks delivery time The TruDesign White Intake Strainers range includes oval composite marine intake strainers designed to protect onboard water intake systems from debris and foreign objects. Manufactured from durable marine-grade composite material, these white scoop-style strainers provide reliable intake protection for marine cooling and plumbing systems while maintaining corrosion-free performance in demanding marine environments.
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$ 4.71
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1-2 weeks delivery time The TruDesign Black Round Intake Strainer 1 1/4" is a composite marine intake strainer designed to protect onboard water intake systems from debris and foreign objects. Manufactured from corrosion-resistant composite material, this round strainer provides reliable water flow protection for marine cooling and plumbing systems while maintaining lightweight and durable performance in harsh marine environments.
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$ 10.62
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1-2 weeks delivery time The TruDesign White Round Intake Strainer 1 1/4" is a composite marine intake strainer designed to protect onboard water intake systems from debris and foreign objects. Manufactured from corrosion-resistant composite material, this round strainer provides reliable water flow protection for marine cooling and plumbing systems while maintaining lightweight and durable performance in demanding marine environments.
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$ 7.50
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1-2 weeks delivery time The TruDesign Black Vented Loops range is designed to prevent siphoning and accidental flooding in marine plumbing systems. Manufactured in New Zealand from composite material, these anti-siphon loops feature silicone duckbill one-way valves, constant internal diameter flow paths, and integrated mounting points for secure installation. Suitable for toilet discharge systems, holding tanks, and marine engine cooling applications. Available in 19 mm, 25 mm, and 38 mm sizes.
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$ 35.27
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1-2 weeks delivery time The TruDesign White Vented Loops range is designed to prevent siphoning and accidental flooding in marine plumbing systems. Manufactured in New Zealand from composite material, these white anti-siphon loops feature silicone duckbill one-way valves, constant internal diameter flow paths, and integrated mounting points for secure installation. Suitable for toilet discharge systems, holding tanks, and marine engine cooling applications. Available in 19 mm, 25 mm, and 38 mm sizes.
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$ 24.47
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1-2 weeks delivery time The TruDesign White Solenoid Vented Loops range is designed to prevent siphoning and accidental flooding in marine plumbing systems while allowing controlled vent shut-off through integrated 12V DC or 24V DC solenoid operation. Manufactured in New Zealand from glass-reinforced nylon composite, these anti-siphon loops are suitable for marine toilet systems, holding tanks, and cooling water applications. Available in 19 mm, 25 mm, and 38 mm sizes.
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$ 215.20
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1-2 weeks delivery time The TruDesign Black Solenoid Valves range includes marine solenoid shut-off valves designed for controlled vent management and anti-siphon systems in marine plumbing applications. Manufactured for use with TruDesign vented loop systems, these normally open solenoid valves require power only when closing and are available in 12V DC and 24V DC versions for reliable marine sanitation and water management systems.
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$ 168.53
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1-2 weeks delivery time The TruDesign Black Non-Return Valves range includes inline composite check valves designed to prevent water backflow and siphoning in marine plumbing systems. Manufactured from UV-stabilized glass-reinforced nylon, these corrosion-resistant valves feature low cracking pressure, stainless steel springs, and compact inline installation for marine, agricultural, freshwater, bilge, and waste system applications. Available in sizes from 3/4" (19 mm) to 2" (50 mm).
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$ 13.22
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1-2 weeks delivery time The TruDesign Black Non-Return Valve Tails range is designed for marine plumbing systems requiring reliable backflow prevention and secure hose connection integration. Manufactured from durable composite material, these valve tails provide corrosion-resistant performance for marine water, bilge, sanitation, and fluid management systems. Available in 25 mm → 1" and 38 mm → 1 1/2" configurations.
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$ 21.91
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1-2 weeks delivery time The TruDesign T-Piece Connector 1 1/2" BSP M-F-F Black is a composite marine manifold fitting designed for creating multiple hose connections from a single ball valve and through-hull installation. Featuring one male BSP thread and two female BSP threads, this corrosion-resistant fitting is suitable for marine plumbing systems and compatible with TruDesign Aquavalve tails in straight, 90°, and 120° configurations.
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$ 15.36
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1-2 weeks delivery time The TruDesign Aquavalve 3-Way Surface Mounted Electronic Diverter Valve 12/24V White is a remotely operated marine Y valve designed for switching flow between holding tank and overboard discharge systems. Operating on 12–24V DC, the valve includes a control panel with position indicators, lock function, stainless steel fastenings, and compatibility with TruDesign Aquavalve hose tails and fittings.
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$ 1,925.39
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1-2 weeks delivery time The TruDesign Aquavalve 3-Way Manual Tap is a marine-grade Y valve designed for black water tank and sanitation systems. Manufactured from fiberglass-reinforced nylon, it provides reliable manual flow diversion between holding tank and overboard discharge systems while withstanding pressures up to 300 PSI.
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$ 138.84
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1-2 weeks delivery time The TruDesign Aquavalve 3-Way Surface Mounted Manual Y Valve 1 1/2" (38 mm) White is a manually operated marine diverter valve designed for switching black water flow between holding tank and overboard discharge systems. Manufactured in New Zealand, this surface-mounted Aquavalve features durable composite construction, manual flow selection, and a 1 1/2" (38 mm) connection size for marine sanitation installations.
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$ 114.28
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1-2 weeks delivery time The TruDesign Aquavalve 3-Way Through Bulkhead Manual Y Valve 1 1/2" (38 mm) White is a manually operated marine diverter valve designed for through bulkhead installation in black water and holding tank systems. Manufactured in New Zealand, this marine Y valve allows switching between holding tank and overboard discharge while providing reliable flow management for marine sanitation systems.
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$ 114.28
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What are the key differences between marine plumbing fittings and standard household plumbing fittings?
Marine plumbing fittings differ from standard household plumbing fittings in their materials and design, as they must withstand constant exposure to water, salt, and pressure variations. Fittings for boats, such as bronze pipe to hose adapters, 316 stainless steel connectors, and nylon hose fittings, are corrosion-resistant and designed for durability in harsh marine environments. Additionally, components like seacocks, hose clamps, and pipe plugs ensure secure and leak-free connections, preventing failures that could lead to water intrusion or system malfunctions.
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How does a pipe to hose adapter help connect different plumbing components on a boat?
A pipe to hose adapter allows seamless connection between rigid plumbing components and flexible marine hoses, ensuring compatibility across different boat plumbing fittings. Commonly made from stainless steel, brass, nylon, or Marelon, these adapters provide a secure and watertight transition for water intake, drainage, and fuel lines. Available in various sizes and thread types, they help maintain reliable plumbing connections on decks, hulls, and tanks while resisting corrosion in harsh marine environments.
How does a 90 degree elbow fitting help in routing boat plumbing lines?
A 90 degree elbow fitting is essential in boat plumbing as it allows for efficient redirection of water flow in tight spaces, preventing kinks in hoses and reducing strain on connections. Made from durable materials like plastic or NPT brass, it ensures a secure and leak free transition between pipes and hoses. With options like barbed or swivel designs, these fittings simplify installation and maintenance, making them a vital accessory for any marine plumbing system.