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 Osculati Long Skin Fitting is manufactured from nylon/fiberglass and fitted with a stainless steel visible head, integrated hose connector, and built-in check valve. Available for hose diameters of 38 mm and 53 mm with thread sizes 1" 1/2 and 2" 1/4. Depending on the version, body diameter ranges from 48 mm to 57 mm, overall length from 126 mm to 172 mm, and flange diameter from 46 mm to 95 mm. Designed for marine drainage systems requiring backflow prevention and a stainless steel visible finish.
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$ 31.07
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1-2 weeks delivery time The Osculati 17.395.45 Long Skin Fitting is manufactured from nylon/fiberglass and features a stainless steel visible head with an integrated check valve. This fully threaded version is supplied with a 1-1/2" BSP thread and is designed for marine drainage and discharge applications requiring backflow prevention. Technical dimensions include a body diameter of 48 mm, C dimension of 78 mm, flange diameter of 117 mm, and overall length of 135 mm.
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$ 35.64
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1-2 weeks delivery time The Osculati Plastic Skin Fitting and Scupper is manufactured from plastic and incorporates an integrated check valve to help prevent water backflow. Available in two versions with a 1-1/2" thread: a hose connector version with a 38 mm hose connection (Osculati 17.319.00) and a scupper version (Osculati 17.319.11). Dimensions range from 112 mm to 127 mm in length with an 81 mm flange diameter, making these fittings suitable for marine drainage and cockpit water discharge systems.
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$ 20.64
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1-2 weeks delivery time The Osculati Angled Skin Fitting is fitted with a mirror-polished stainless steel visible flange inclined at 15° and incorporates a built-in check valve. Available with 38 mm or 50 mm hose connections and a 2-1/4" thread, both versions feature a body diameter of 57 mm, outside diameter of 76 mm, flange diameter of 94 mm, and overall length of 170 mm. Designed for marine drainage and discharge installations requiring an angled through-hull outlet and backflow protection.
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$ 32.55
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1-2 weeks delivery time The Osculati Angled Skin Fitting features a mirror-polished stainless steel visible flange and a 15° inclined body for marine drainage installations. Available with 38 mm or 50 mm hose connections and a 2-1/4" thread, both versions have a body diameter of 57 mm, outside diameter of 76 mm, flange diameter of 94 mm, and overall length of 170 mm. Designed for through-hull drainage applications where an angled outlet is required.
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$ 23.68
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1-2 weeks delivery time The Osculati Female/Female Ball Valve is manufactured from polypropylene and fitted with a nylon internal ball for reliable flow control in marine and industrial systems. The valve features female BSP threads on both ends and is available in sizes from 1/2" to 1-1/2". Its corrosion-resistant construction provides a sturdy and safe solution for fluid handling applications.
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$ 5.42
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1-2 weeks delivery time The Osculati Polypropylene 90° Hose Connector features an integrated swivel nut and gasket for secure hose connections in marine and fluid handling systems. The fitting is manufactured from polypropylene and is available with thread sizes from 1/2" to 1-1/2" and hose adaptor diameters from 12 mm to 38 mm. The 90° design helps simplify hose routing in confined installation spaces.
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$ 84.08
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1-2 weeks delivery time The Osculati Straight Polypropylene Hose Connector is supplied with a swivel nut and sealing gasket for secure hose-to-thread connections in marine and plumbing systems. Available with thread sizes from 3/8" to 1-1/2" and hose adaptor diameters from 12 mm to 38 mm. The straight design allows direct hose routing and easy installation in water and fluid transfer systems.
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$ 53.73
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1-2 weeks delivery time The Osculati 90° Polypropylene Male Hose Connector is designed for hose-to-thread connections where an angled outlet is required. Manufactured from polypropylene, it features a male threaded connection and hose adaptor sizes from 12 mm to 38 mm. Available with thread sizes from 3/8" to 1-1/2", the fitting provides a lightweight and corrosion-resistant solution for marine, plumbing, and fluid transfer systems.
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$ 52.20
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1-2 weeks delivery time The Osculati Black Polycarbonate Male Hose Adaptor is designed for connecting flexible hoses to threaded fittings in marine and industrial fluid systems. Manufactured from black polycarbonate, it features a male threaded connection and hose tail diameters from 18 mm to 46 mm. Available with thread sizes from 1/2" to 1-1/2", the fitting provides a durable and corrosion-resistant solution for water transfer and plumbing applications.
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$ 3.24
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1-2 weeks delivery time The Osculati Polypropylene Male Hose Adaptor is designed for connecting flexible hoses to threaded fittings in marine, plumbing, and fluid transfer systems. Manufactured from polypropylene, it features a male threaded connection and hose tail diameters ranging from 12 mm to 50 mm. Available with thread sizes from 3/8" to 1-1/2", the fitting provides a lightweight, corrosion-resistant solution for a wide range of water handling applications.
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$ 39.28
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1-2 weeks delivery time The Osculati Stainless Steel Protection Tabs are designed to protect skin fittings, petrol vents, water outlets, and similar hull-mounted components from impact and damage. Manufactured from stainless steel, these protective covers are available in three sizes: 41 x 44 x 12 mm, 57 x 54 x 16 mm, and 93 x 87 x 25 mm, allowing installation on a variety of marine ventilation and outlet fittings.
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$ 1.53
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1-2 weeks delivery time The Osculati Cockpit Drain is manufactured from mirror-polished AISI 316 stainless steel and designed for efficient cockpit water drainage. The unit features a removable snap-on upper grille that conceals the fastening screws for a clean appearance and easier installation. Available with 1" or 1-1/2" internal thread connections, with face diameters of 58 mm and 80 mm respectively.
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$ 41.94
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1-2 weeks delivery time The Osculati Cockpit Flush Drain is manufactured from two chromed brass components and features a removable insert that functions as a filter for debris retention and easy cleaning. Designed for flush installation in cockpit drainage systems, the drain is available in fully threaded versions with 1-1/4" or 1-1/2" connections, as well as hose connector versions with 38 mm and 45 mm hose outlets.
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$ 57.10
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1-2 weeks delivery time The Osculati 45° Cockpit Drain is manufactured from AISI 316 stainless steel and designed for efficient cockpit drainage with backflow protection. The integrated check valve uses an internal ball mechanism to prevent water from flowing back into the cockpit, while the removable grille allows easy cleaning and maintenance. The drain features a 92 mm flange diameter and a 40 mm hose connection.
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$ 130.91
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1-2 weeks delivery time The Osculati 90° Cockpit Drain is manufactured from AISI 316 stainless steel and features an integrated check valve with an internal ball mechanism to prevent water backflow into the cockpit. The compact 90° design simplifies hose routing in confined spaces, while the concealed fastening system provides a clean installation. The drain has a 92 mm flange diameter and a 38 mm hose connection.
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$ 130.76
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1-2 weeks delivery time The Osculati Oval Cockpit Drain is manufactured from AISI 316 stainless steel and designed for efficient cockpit drainage in marine applications. The unit features a removable grille for easy cleaning and maintenance, a flush-mounted oval design measuring 92 x 190 mm, and a 38 mm hose connection suitable for cockpit and deck drainage systems.
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$ 146.97
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1-2 weeks delivery time The Osculati Cockpit Drain is manufactured from AISI 316 stainless steel and designed for compact cockpit and deck drainage applications. The upper section is threaded, allowing installation on decks of different thicknesses from 3 to 11 mm. The drain features a 20 mm hose connection, a 32 mm mounting hole requirement, and a 42 mm head diameter.
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$ 40.53
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1-2 weeks delivery time The Osculati 90° Cockpit Drain is designed for marine drainage systems and features a reinforced acetyl fibre body combined with an AISI 316 stainless steel head. The integrated check flap helps prevent water backflow into the cockpit, while the compact 90° configuration simplifies hose installation. Available with 38 mm or 51 mm hose connections and an 87 mm head diameter.
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$ 68.41
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1-2 weeks delivery time The Osculati Flush Cockpit Drain combines a reinforced acetyl fibre body with an AISI 316 stainless steel head for corrosion resistance and long service life in marine environments. The removable filter allows easy cleaning and maintenance, while the flush-mounted design provides a neat deck finish. Available in straight and 90° versions, both designed for Ø26 mm tube connections.
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$ 35.71
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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.