Boat Adapters

Boat Plumbing Adapters
  • Midland Metal® - 1/4" Hose I.D. to 1/4" FIP(F) Nylon White Hose/Pipe Adapter
    Midland Metal®1/4" Hose I.D. to 1/4" FIP(F) Nylon White Hose/Pipe Adapter (AF14)
    0
    # mpn4644463747
    1/4" Hose I.D. to 1/4" FIP(F) Nylon White 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...
    Expertly crafted from premium materialsHigh quality at a budget-friendly price
    $8.31
  • Midland Metal® - 1/4" Hose I.D. to 3/16" FIP(F) Nylon White Hose/Pipe Adapter
    Midland Metal®1/4" Hose I.D. to 3/16" FIP(F) Nylon White Hose/Pipe Adapter (HM14316)
    0
    # mpn4644464471
    1/4" Hose I.D. to 3/16" FIP(F) Nylon White 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...
    Expertly crafted from premium materialsHigh quality at a budget-friendly price
    $5.15
  • Whale® - 3/8" NPT(M) to 15 mm Stem Brass Adapter
    Whale®3/8" NPT(M) to 15 mm Stem Brass Adapter (WX1563B)
    0
    # mpn4696751850
    3/8" NPT(M) to 15 mm Stem 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, all...
    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
    $24.31
  • Whale® - Quick Connect Plumbing System Fitting
    Whale®Quick Connect Plumbing System Fitting (WX1584B)
    0
    # mpn4971555958
    Quick Connect Plumbing System Fitting by Whale®. 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, this product by Sierra will last a...
    High quality at an affordable priceExpertly made from premium materials
    $3.13
  • Scandvik® - 3/8" BSP(M) to 1/2" NPS(M) Delrin Pipe/Pipe Adapter
    Scandvik®3/8" BSP(M) to 1/2" NPS(M) Delrin Pipe/Pipe Adapter (10961P)
    0
    # mpn4801538174
    3/8" BSP(M) to 1/2" NPS(M) Delrin Pipe/Pipe Adapter by Scandvik®. 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
    $11.91
  • Midland Metal® - 1/2" Hose I.D. to 3/8" MIP(M) Hose/Pipe Adapter
    Midland Metal®1/2" Hose I.D. to 3/8" MIP(M) Hose/Pipe Adapter
    0
    # 5294031699
    1/2" 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
    $4.79 - $5.70
  • Midland Metal® - 3/8" Hose I.D. to 3/8" MIP(M) Hose/Pipe Adapter
    Midland Metal®3/8" Hose I.D. to 3/8" MIP(M) Hose/Pipe Adapter
    0
    # 5294033031
    3/8" 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 - $5.70
  • Flow-Rite® - 3/4" Hose I.D. to 3/4" NPT(M) Hose/Pipe Adapter
    Flow-Rite®3/4" Hose I.D. to 3/4" NPT(M) Hose/Pipe Adapter
    0
    # 5294032286
    3/4" Hose I.D. to 3/4" NPT(M) Hose/Pipe Adapter by Flow-Rite®. 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...
    Expertly crafted from premium materialsHigh quality at a budget-friendly price
    $3.91 - $5.30
  • Rule Pumps® - 1" Hose I.D. Plastic White Adapter for 360/500 Pumps
    Rule Pumps®1" Hose I.D. Plastic White Adapter for 360/500 Pumps (1202R)
    0
    # mpn4657537619
    1" Hose I.D. Plastic White Adapter for 360/500 Pumps by Rule Pumps®. 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
    $14.23
  • Midland Metal® - 2" NPT(M) to 3/4" NPT(F) Bronze Lead Free Pipe/Pipe Hex Bushing
    Midland Metal®2" NPT(M) to 3/4" NPT(F) Bronze Lead Free Pipe/Pipe Hex Bushing (44528)
    0
    # mpn4644464356
    2" NPT(M) to 3/4" NPT(F) Bronze Lead Free Pipe/Pipe Hex Bushing 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...
    Expertly crafted from premium materialsHigh quality at a budget-friendly price
    $49.55
  • Rule Pumps® - 1-1/2" Hose to 3/4" Plastic White Pump Head Adapter
    Rule Pumps®1-1/2" Hose to 3/4" Plastic White Pump Head Adapter (63)
    0
    # mpn4657537685
    1-1/2" Hose to 3/4" Plastic White Pump Head Adapter by Rule Pumps®. 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
    $15.79
  • Rule Pumps® - 1-1/8" Plastic White Garden Hose Adapter
    Rule Pumps®1-1/8" Plastic White Garden Hose Adapter (68)
    0
    # mpn2004200
    1-1/8" Plastic White Garden Hose Adapter by Rule Pumps®. 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...
    Expertly crafted from premium materialsHigh quality at a budget-friendly price
    $8.75
  • Attwood® - 3/4" Hose I.D. to 3/4"-14 NPS(F) Plastic White Hose/Pipe Adapter, Bulk
    Attwood®3/4" Hose I.D. to 3/4"-14 NPS(F) Plastic White Hose/Pipe Adapter, Bulk (3899-1)
    0
    # mpn1578773377
    3/4" Hose I.D. to 3/4"-14 NPS(F) Plastic White Hose/Pipe Adapter, Bulk (3899-1) 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...
    Expertly crafted from premium materialsHigh quality at a budget-friendly price
    $9.25
  • Groco® - 1" Hose I.D. to 1" NPT(M) Stainless Steel Hose/Pipe Adapter
    Groco®1" Hose I.D. to 1" NPT(M) Stainless Steel Hose/Pipe Adapter (PTH-1000-S)
    0
    # mpn4699215502
    1" Hose I.D. to 1" NPT(M) Stainless Steel Hose/Pipe Adapter (PTH-1000-S) 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...
    Stainless SteelStandard Flow
    $17.45
  • Groco® - 1" NPS(F) to 1" NPT(M) Stainless Steel Pipe/Pipe Adapter
    Groco®1" NPS(F) to 1" NPT(M) Stainless Steel Pipe/Pipe Adapter (IBVF-1000-S)
    0
    # mpn4699215496
    1" NPS(F) to 1" NPT(M) Stainless Steel Pipe/Pipe Adapter (IBVF-1000-S) 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
    $63.58
  • Groco® - 1-1/2" Hose I.D. to 1-1/2" NPT(M) Stainless Steel Hose/Pipe Adapter
    Groco®1-1/2" Hose I.D. to 1-1/2" NPT(M) Stainless Steel Hose/Pipe Adapter (PTH-1500-S)
    0
    # mpn4699215503
    1-1/2" Hose I.D. to 1-1/2" NPT(M) Stainless Steel Hose/Pipe Adapter (PTH-1500-S) 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...
    Stainless SteelStandard Flow
    $29.36
  • Groco® - 1-1/2" NPT(M) to 1-1/2" NPS(M) Stainless Steel Pipe/Pipe Adapter
    Groco®1-1/2" NPT(M) to 1-1/2" NPS(M) Stainless Steel Pipe/Pipe Adapter (IBVF-1500-S)
    0
    # mpn4699215501
    1-1/2" NPT(M) to 1-1/2" NPS(M) Stainless Steel Pipe/Pipe Adapter (IBVF-1500-S) 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
    $77.04
  • Groco® - 1-1/4" BSPP(M) to 1-1/4" BSPP(F) Stainless Steel Pipe/Pipe Adapter
    Groco®1-1/4" BSPP(M) to 1-1/4" BSPP(F) Stainless Steel Pipe/Pipe Adapter (IBVF-1250-S)
    0
    # mpn4699215480
    1-1/4" BSPP(M) to 1-1/4" BSPP(F) Stainless Steel Pipe/Pipe Adapter (IBVF-1250-S) by Groco®. Patented IBVF Flanged Adaptors have been developed to address several common problems in the marine industry. This product is made of...
    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
    $68.07
  • Groco® - 1-1/4" Hose I.D. to 1-1/4" NPT(M) Stainless Steel Hose/Pipe Adapter
    Groco®1-1/4" Hose I.D. to 1-1/4" NPT(M) Stainless Steel Hose/Pipe Adapter (PTH-1250-S)
    0
    # mpn4699215511
    1-1/4" Hose I.D. to 1-1/4" NPT(M) Stainless Steel Hose/Pipe Adapter (PTH-1250-S) 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...
    Stainless SteelStandard Flow
    $23.81
  • Groco® - 1-1/4" NPT(M) to 1-1/4" Hose I.D. Bronze Engine Flush Service Adapter
    Groco®1-1/4" NPT(M) to 1-1/4" Hose I.D. Bronze Engine Flush Service Adapter (SSC-1250)
    0
    # mpn4721748158
    1-1/4" NPT(M) to 1-1/4" Hose I.D. Bronze Engine Flush Service Adapter by Groco®. A simple quarter turn quick release plug can add safety and flexibility to any water system. Add SSC to the top of any seacock to allow instant emergency...
    Expertly crafted from premium materialsHigh quality at a budget-friendly price
    $170.41
  • Groco® - 2" Hose I.D. to 2" NPT(M) Stainless Steel Hose/Pipe Adapter
    Groco®2" Hose I.D. to 2" NPT(M) Stainless Steel Hose/Pipe Adapter (PTH-2000-S)
    0
    # mpn4699215512
    2" Hose I.D. to 2" NPT(M) Stainless Steel Hose/Pipe Adapter (PTH-2000-S) 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...
    Stainless SteelStandard Flow
    $46.37
  • Groco® - 2" NPS(F) to 2" NPT(M) Stainless Steel Pipe/Pipe Adapter
    Groco®2" NPS(F) to 2" NPT(M) Stainless Steel Pipe/Pipe Adapter (IBVF-2000-S)
    0
    # mpn4699215510
    2" NPS(F) to 2" NPT(M) Stainless Steel Pipe/Pipe Adapter (IBVF-2000-S) 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
    $86.76
  • Groco® - 3/4" Hose I.D. to 3/4" NPT(M) Stainless Steel Hose/Pipe Adapter
    Groco®3/4" Hose I.D. to 3/4" NPT(M) Stainless Steel Hose/Pipe Adapter (PTH-750-S)
    0
    # mpn4699215513
    3/4" Hose I.D. to 3/4" NPT(M) Stainless Steel Hose/Pipe Adapter (PTH-750-S) 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....
    Stainless SteelSizes from 1/2" to 3"
    $12.70
  • Groco® - 3/4" NPS(F) to 3/4" NPT(M) Stainless Steel Pipe/Pipe Adapter
    Groco®3/4" NPS(F) to 3/4" NPT(M) Stainless Steel Pipe/Pipe Adapter (IBVF-750-S)
    0
    # mpn4699215481
    3/4" NPS(F) to 3/4" NPT(M) Stainless Steel Pipe/Pipe Adapter (IBVF-750-S) 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
    $58.34
  • Midland Metal® - 1" Hose I.D. to 1-1/4" MIP(M) Nylon White Hose/Pipe Adapter
    Midland Metal®1" Hose I.D. to 1-1/4" MIP(M) Nylon White Hose/Pipe Adapter (A114100)
    0
    # mpn4644464370
    1" Hose I.D. to 1-1/4" MIP(M) Nylon White 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...
    Expertly crafted from premium materialsHigh quality at a budget-friendly price
    $10.04
  • Midland Metal® - 1" MIP(M) to 1/2" MIP(F) Nylon White Pipe/Pipe Hex Bushing
    Midland Metal®1" MIP(M) to 1/2" MIP(F) Nylon White Pipe/Pipe Hex Bushing (RB10012)
    0
    # mpn4644463756
    1" MIP(M) to 1/2" MIP(F) Nylon White Pipe/Pipe Hex Bushing 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...
    Expertly crafted from premium materialsHigh quality at a budget-friendly price
    $9.26
  • Midland Metal® - 1" MIP(M) to 3/4" MIP(F) Nylon White Pipe/Pipe Hex Bushing
    Midland Metal®1" MIP(M) to 3/4" MIP(F) Nylon White Pipe/Pipe Hex Bushing (RB10034)
    0
    # mpn4644464439
    1" MIP(M) to 3/4" MIP(F) Nylon White Pipe/Pipe Hex Bushing 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...
    Expertly crafted from premium materialsHigh quality at a budget-friendly price
    $10.64
  • Midland Metal® - 1" NPT(F) to 3/8" NPT(F) Bronze Lead Free Reducing Pipe/Pipe Coupling
    Midland Metal®1" NPT(F) to 3/8" NPT(F) Bronze Lead Free Reducing Pipe/Pipe Coupling (44440)
    0
    # mpn4644464334
    1" NPT(F) to 3/8" NPT(F) Bronze Lead Free Reducing Pipe/Pipe Coupling 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...
    Expertly crafted from premium materialsHigh quality at a budget-friendly price
    $6.28
  • Midland Metal® - 1-1/2" I.D. to 1-1/2" MIP(M) Nylon White Hose/Pipe Adapter
    Midland Metal®1-1/2" I.D. to 1-1/2" MIP(M) Nylon White Hose/Pipe Adapter (33-033W)
    0
    # mpn4644463707
    1-1/2" I.D. to 1-1/2" MIP(M) Nylon White 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...
    Expertly crafted from premium materialsHigh quality at a budget-friendly price
    $10.13
  • Midland Metal® - 1-1/2" MIP(M) to 3/4" MIP(F) Nylon White Pipe/Pipe Hex Bushing
    Midland Metal®1-1/2" MIP(M) to 3/4" MIP(F) Nylon White Pipe/Pipe Hex Bushing (RB11234)
    0
    # mpn4644463757
    1-1/2" MIP(M) to 3/4" MIP(F) Nylon White Pipe/Pipe Hex Bushing 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...
    Expertly crafted from premium materialsHigh quality at a budget-friendly price
    $13.28




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.

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