Boat Adapters
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Groco®1" Hose I.D. to 1" NPT(M) Hose/Pipe Adapter1" Hose I.D. to 1" NPT(M) Hose/Pipe Adapter by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...High quality at an affordable priceExpertly made from premium materials$11.11 - $17.45 - Groco®1" NPS(F) to 1" NPT(M) Pipe/Pipe Adapter1" NPS(F) to 1" NPT(M) Pipe/Pipe Adapter by Groco®. Patented IBVF Flanged Adaptors have been developed to address several common problems in the marine industry. This product is made of high-quality materials to serve you for years to...Eliminate dangerous thread miss-match when in-line valves are screwed onto thru hullsAccept standard thru-hulls into the base and standard in-line valves on top$57.32 - $64.15
- Groco®1-1/2" Hose I.D. to 1-1/2" NPT(M) Hose/Pipe Adapter1-1/2" Hose I.D. to 1-1/2" NPT(M) Hose/Pipe Adapter by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs...High quality at an affordable priceExpertly made from premium materials$24.86 - $29.36
- Groco®1-1/2" NPT(M) to 1-1/2" NPS(M) Pipe/Pipe Adapter1-1/2" NPT(M) to 1-1/2" NPS(M) Pipe/Pipe Adapter by Groco®. Patented IBVF Flanged Adaptors have been developed to address several common problems in the marine industry. This product is made of high-quality materials to serve you for...Eliminate dangerous thread miss-match when in-line valves are screwed onto thru hullsAccept standard thru-hulls into the base and standard in-line valves on top$77.61 - $78.22
- Groco®1-1/4" BSPP(M) to 1-1/4" BSPP(F) Pipe/Pipe Adapter1-1/4" BSPP(M) to 1-1/4" BSPP(F) Pipe/Pipe Adapter by Groco®. Patented IBVF Flanged Adaptors have been developed to address several common problems in the marine industry. This product is made of high-quality materials to serve you for...Eliminate dangerous thread miss-match when in-line valves are screwed onto thru hullsAccept standard thru-hulls into the base and standard in-line valves on top$60.36 - $68.64
- Groco®1-1/4" Hose I.D. to 1-1/4" NPT(M) Hose/Pipe Adapter1-1/4" Hose I.D. to 1-1/4" NPT(M) Hose/Pipe Adapter by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs...High quality at an affordable priceExpertly made from premium materials$19.49 - $23.81
- Groco®2" Hose I.D. to 2" NPT(M) Hose/Pipe Adapter2" Hose I.D. to 2" NPT(M) Hose/Pipe Adapter by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...High quality at an affordable priceExpertly made from premium materials$33.44 - $46.37
- Groco®2" NPS(F) to 2" NPT(M) Pipe/Pipe Adapter2" NPS(F) to 2" NPT(M) Pipe/Pipe Adapter by Groco®. Patented IBVF Flanged Adaptors have been developed to address several common problems in the marine industry. This product is made of high-quality materials to serve you for years to...Eliminate dangerous thread miss-match when in-line valves are screwed onto thru hullsAccept standard thru-hulls into the base and standard in-line valves on top$87.90 - $101.91
- Groco®3/4" Hose I.D. to 3/4" NPT(M) Hose/Pipe Adapter3/4" Hose I.D. to 3/4" NPT(M) Hose/Pipe Adapter by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...High quality at an affordable priceExpertly made from premium materials$7.73 - $12.70
- Groco®3/4" NPS(F) to 3/4" NPT(M) Pipe/Pipe Adapter3/4" NPS(F) to 3/4" NPT(M) Pipe/Pipe Adapter by Groco®. Patented IBVF Flanged Adaptors have been developed to address several common problems in the marine industry. This product is made of high-quality materials to serve you for years...Eliminate dangerous thread miss-match when in-line valves are screwed onto thru hullsAccept standard thru-hulls into the base and standard in-line valves on top$49.31 - $58.92
- Attwood®3/4" Hose I.D. to 3/4"-14 NPS(F) Hose/Pipe Adapter3/4" Hose I.D. to 3/4"-14 NPS(F) Hose/Pipe Adapter by Attwood®. Threaded end fits 3888 drain fitting or A-Series aerator pump intakes and outlets. Acetal construction. This product is made of high-quality materials to serve you for...Expertly crafted from premium materialsHigh quality at a budget-friendly price$8.63 - $9.25
- Midland Metal®1/2" Hose I.D. to 1/2" MIP(M) Hose/Pipe Adapter1/2" Hose I.D. to 1/2" MIP(M) Hose/Pipe Adapter by Midland Metal®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your...Expertly crafted from premium materialsHigh quality at a budget-friendly price$4.47 - $5.47
- Midland Metal®3/8" Hose I.D. to 3/8" MIP(M) Hose/Pipe Adapter3/8" Hose I.D. to 3/8" MIP(M) Hose/Pipe Adapter by Midland Metal®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your...Expertly crafted from premium materialsHigh quality at a budget-friendly price$4.47 - $5.52
- Whale®1/2" NPT(M) to 15 mm Quick Connect Brass Adapter (WX1513B)1/2" NPT(M) to 15 mm Quick Connect Brass Adapter by Whale®. The Quick Connect system can be used by anyone to install additional outlets or to replumb your boat or recreational vehicle. Whale Quick Connect fittings offer many benefits,...Unique Double Gripper' design provides secure lifelong pipework retention even at excessive pressuresThe innovative cage collet' eliminates leaks where fittings are installed close to tight bends$26.30
- Whale®3/8" BSP(F) to 15 mm Quick Connect Brass Adapter (WX1539B)3/8" BSP(F) to 15 mm Quick Connect Brass Adapter by Whale®. The Quick Connect system can be used by anyone to install additional outlets or to replumb your boat or recreational vehicle. Whale Quick Connect fittings offer many benefits,...Unique Double Gripper' design provides secure lifelong pipework retention even at excessive pressuresThe innovative cage collet' eliminates leaks where fittings are installed close to tight bends$30.61
- Whale®Tap Tail 1/2" BSP(M) to 15 mm Quick Connect Brass Adapter (WX1515B)Tap Tail 1/2" BSP(M) to 15 mm Quick Connect Brass Adapter by Whale®. The Quick Connect system can be used by anyone to install additional outlets or to replumb your boat or recreational vehicle. Whale Quick Connect fittings offer many...Unique Double Gripper' design provides secure lifelong pipework retention even at excessive pressuresThe innovative cage collet' eliminates leaks where fittings are installed close to tight bends$7.80
- Groco®1" Hose I.D. to 1" NPT(M) Bronze Hose/Pipe Adapter (PTH-1000)1" Hose I.D. to 1" NPT(M) Bronze Hose/Pipe Adapter (PTH-1000) by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet...C83600 BronzeStandard Flow$11.11
- Groco®1" Hose I.D. to 3/4" NPT(M) Bronze Hose/Pipe Adapter (FF-750)1" Hose I.D. to 3/4" NPT(M) Bronze Hose/Pipe Adapter by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your...Full FlowMale NPT x Hose connection$12.38
- Groco®1" NPS(F) to 1" NPT(M) Bronze Pipe/Pipe Adapter (IBVF-1000)1" NPS(F) to 1" NPT(M) Bronze Pipe/Pipe Adapter (IBVF-1000) by Groco®. Patented IBVF Flanged Adaptors have been developed to address several common problems in the marine industry. This product is made of high-quality materials to serve...Eliminate dangerous thread miss-match when in-line valves are screwed onto thru hullsAccept standard thru-hulls into the base and standard in-line valves on top$57.32
- Groco®1-1/2" Hose I.D. to 1-1/2" NPS(F) Bronze Hose/Pipe Adapter (TP-1500)1-1/2" Hose I.D. to 1-1/2" NPS(F) Bronze Hose/Pipe Adapter by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet...Expertly crafted from premium materialsHigh quality at a budget-friendly price$56.33
- Groco®1-1/2" Hose I.D. to 1-1/2" NPT(M) Bronze Hose/Pipe Adapter (PTH-1500)1-1/2" Hose I.D. to 1-1/2" NPT(M) Bronze Hose/Pipe Adapter (PTH-1500) by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It...C83600 BronzeStandard Flow$24.86
- Groco®1-1/2" Hose I.D. to 1-1/4" NPT(M) Bronze Hose/Pipe Adapter (FF-1250)1-1/2" Hose I.D. to 1-1/4" NPT(M) Bronze Hose/Pipe Adapter by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet...Full FlowMale NPT x Hose connection$24.25
- Groco®1-1/2" NPT(M) to 1-1/2" NPS(M) Bronze Pipe/Pipe Adapter (IBVF-1500)1-1/2" NPT(M) to 1-1/2" NPS(M) Bronze Pipe/Pipe Adapter (IBVF-1500) by Groco®. Patented IBVF Flanged Adaptors have been developed to address several common problems in the marine industry. This product is made of high-quality materials...Eliminate dangerous thread miss-match when in-line valves are screwed onto thru hullsAccept standard thru-hulls into the base and standard in-line valves on top$78.22
- Groco®1-1/4" BSPP(M) to 1-1/4" BSPP(F) Bronze Pipe/Pipe Adapter (IBVF-1250)1-1/4" BSPP(M) to 1-1/4" BSPP(F) Bronze Pipe/Pipe Adapter (IBVF-1250) by Groco®. Patented IBVF Flanged Adaptors have been developed to address several common problems in the marine industry. This product is made of high-quality...Eliminate dangerous thread miss-match when in-line valves are screwed onto thru hullsAccept standard thru-hulls into the base and standard in-line valves on top$60.36
- Groco®1-1/4" Hose I.D. to 1" NPT(M) Bronze Hose/Pipe Adapter (FF-1000)1-1/4" Hose I.D. to 1" NPT(M) Bronze Hose/Pipe Adapter by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your...Full FlowMale NPT x Hose connection$16.32
- Groco®1-1/4" Hose I.D. to 1-1/4" BSPP(M) Bronze Hose/Pipe Adapter (PTH-114PD32)1-1/4" Hose I.D. to 1-1/4" BSPP(M) Bronze Hose/Pipe Adapter by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet...83600 BronzeStandard Flow$25.37
- Groco®1-1/4" Hose I.D. to 1-1/4" NPT(M) Bronze Hose/Pipe Adapter (PTH-1250)1-1/4" Hose I.D. to 1-1/4" NPT(M) Bronze Hose/Pipe Adapter (PTH-1250) by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It...C83600 BronzeStandard Flow$19.49
- Groco®1-1/8" Hose I.D. to 1" NPT(M) Bronze Hose/Pipe Adapter (FF-1125)1-1/8" Hose I.D. to 1" NPT(M) Bronze Hose/Pipe Adapter by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your...Full FlowMale NPT x Hose connection$17.28
- Groco®1-1/8" Hose I.D. to 1-1/4" NPT(M) Bronze Hose/Pipe Adapter (PTH-1125)1-1/8" Hose I.D. to 1-1/4" NPT(M) Bronze Hose/Pipe Adapter by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet...C83600 BronzeStandard Flow$20.15
- Groco®1-3/4" Hose I.D. to 1-1/2" NPT(M) Bronze Hose/Pipe Adapter (FF-1500)1-3/4" Hose I.D. to 1-1/2" NPT(M) Bronze Hose/Pipe Adapter by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet...Full FlowMale NPT x Hose connection$33.60
Depending on its type and application, a boat may contain different piping systems designed for bilge water removal, fresh and potable water supply, sanitary purposes, livewell, etc. All of these systems require regular inspection and maintenance, and in order to rebuild or restore them, you may need to replace some metal or plastic fittings and adapters. Such parts are typically installed in places where pipes pass through the hull or deck, change direction, or connect to various equipment, and all of them have to meet certain standards and marine regulations.
For instance, it's not recommended to use nylon thru-hulls and other plastic fittings at or below the waterline. In our online store, you can find a large assortment of elbows, couplings, tees, thru-hull fittings, in-line valves, and other products used for marine plumbing. Sourced from leading brands, they are available in numerous sizes and comply with the necessary regulations. However, before ordering any of them, make sure the thread of your line complies with our fittings. Most of them are made in accordance with national thread standards such as NPT, NPS, or their sub-types (MPT, FPT, etc.) Featuring a parallel or tapered thread, they are not compatible with British standards (such as BSPT or BSPP) that are more spread in Europe.
