Hose & Pipe Fittings

  1. 9% off

    Scandvik ABA 316 Hose Clamp Cruiser Pack - 31606

    $461.97
    $415.83
    1
  2. 9% off

    Whale Quick Connect Plumbing System Fitting - WX1599B

    $304.26
    $273.90
    0
  3. 9% off

    Groco HVL Series Vented Loop

    $184.56 - $336.40
    $184.56 - $302.82
    1
  4. 9% off

    Groco Raw Water Manifold

    $110.08 - $424.00
    $99.13 - $381.66
    0
  5. 9% off

    Groco Replacement Vacuum Breaker Diaphragm - VL-2023

    $91.10
    $82.05
    0
  6. 9% off

    Perko Pipe To Hose Adapter - 0076009PLB

    $70.66
    $63.66
  7. 9% off

    Raritan Discharge Vented Loop - 1/2" - VL11/2

    $63.36
    $57.09
  8. 9% off

    Groco TPC Series Tail Piece - 90 deg.

    $57.52 - $169.96
    $51.83 - $153.02
    0
  9. 9% off

    Jabsco Flush Spare Quick Release Hose Adapter - 31911-0002

    $57.52
    $51.83
  10. Trident Marine Reducing Hose Insert Sleeve

    $50.22 - $54.60
  11. 9% off

    Whale Quick Connect Plumbing System Fitting - WX1575B

    $53.14
    $47.89
    0
  12. 9% off

    Raritan Vented Loop - 3/4" - VL3/4

    $38.54
    $34.75
  13. 14% off

    Forespar Vented Loop

    $40.25 - $72.12
    $34.31 - $61.39
    2
  14. 9% off

    AquaLock Metric Straight Valve - 15 mm (9/16") - 81902216

    $37.08
    $33.43
    0
  15. 9% off

    Groco TPT Series Straight Full-Flow Pipe to Hose Adapter

    $32.70 - $69.20
    $29.49 - $62.34
    1
  16. 9% off

    Whale Quick Connect Plumbing System Fitting - WX1544B

    $32.70
    $29.49
    0
  17. 9% off

    Whale Quick Connect Plumbing System Fitting - WX1574B

    $31.24
    $28.18
    1
  18. 9% off

    Perko Pipe To Hose Elbow Adapter

    $31.24 - $120.32
    $28.18 - $108.35
  19. 9% off

    Jabsco Discharge Port Adapter - 98023-0080

    $28.98
    $26.15
    0
  20. 9% off

    Rule Hose Y Fitting - 213

    $28.81
    $25.99
  21. 9% off

    Whale Male Stem Non-Return Valve Adapter - 15 mm (9/16") - WX1534B

    $28.79
    $25.97
    0
  22. 9% off

    AquaLock CTS Plastic Straight Valve - 1/2" - 0959098

    $26.98
    $24.34
    1
  23. 9% off

    Whale Quick Connect Adapter - 1/2" NPT Male to 15 mm (9/16") - WX1513B

    $25.42
    $22.94
    0
  24. 9% off

    T-H Marine Aerator Spray Head/Wash Down Combo Fittings - AHVWD-90-DP

    $24.88
    $22.45
    0
  25. 9% off

    Whale Stem Adapter - 1/2" NPT Male to 15 mm (9/16") - WX1524B

    $24.00
    $21.67
    0
  26. 9% off

    Whale Quick Connect Plumbing System Fitting - WX1531B

    $20.28
    $18.31
    0
  27. 9% off

    Whale Quick Connect Plumbing System Fitting - WX1582B

    $20.16
    $18.21
    0
  28. 9% off

    Groco FFC Series Full-Flow Pipe To Hose Adapter - 90 deg.

    $19.91 - $358.34
    $17.99 - $322.57
    0
  29. 9% off

    Groco PTHD Series Bronze Pipe to Hose Fitting - 45 deg.

    $19.84 - $177.31
    $17.91 - $159.64
  30. 9% off

    Perko Pipe To Hose Adapter

    $19.18 - $48.76
    $17.33 - $43.95
  31. 9% off

    T-H Marine Barbed 3-Way Y Fitting - 3/4" Hose - Y-750-DP

    $19.04
    $17.20
    1
  32. 9% off

    Groco Stainless Steel Pipe to Hose Fitting

    $18.34 - $64.82
    $16.57 - $58.40
  33. 14% off

    Forespar Marelon Threaded Reducer/Adapter

    $19.23
    $16.44
    0
  34. 9% off

    AquaLock NPS Metric Female Swivel Elbow Fitting - 15 mm (9/16") x 1/2" - 81902166

    $18.16
    $16.41
    3
  35. 9% off

    AquaLock Metric Hose Barb Adapter - 15 mm (9/16") x 1/2" HB - 81902200

    $17.04
    $15.39
    0
  36. 9% off

    Seachoice Brass Tee Fitting - 50-20891

    $17.04
    $15.39
  37. 9% off

    Groco PTH-C Series Bronze BSPP Pipe to Hose Fitting - 90 deg.

    $16.92 - $91.12
    $15.29 - $82.07
  38. 9% off

    AquaLock Metric Stackable Tee - 15 mm (9/16") - 81902172

    $16.69
    $15.08
    0
  39. 9% off

    AquaLock Metric Tee - 15 mm (9/16") - 81902169

    $16.28
    $14.72
    1
  40. 9% off

    Whale Y Hose Connector - YP6114

    $16.22
    $14.66
    0
  41. 9% off

    AquaLock Metric Elbow Fitting - 15 mm (9/16") - 81902163

    $15.93
    $14.40
    0
  42. 9% off

    Seachoice Double-Ended Thru-Hull Connector - 18201

    $15.74
    $14.22
  43. 9% off

    AquaLock CTS Plastic Elbow Fitting - 1/2" - 81902934

    $15.68
    $14.18
    0
  44. 9% off

    T-H Marine Reducing Tee Fitting

    $15.59 - $16.50
    $14.09 - $14.91
    0
  45. 9% off

    AquaLock CST Metric Reducing Coupling - 15 mm (19/32") x 1/2" - 81902162

    $15.46
    $13.97
    0
  46. 9% off

    AquaLock Metric Stackable Elbow Fitting - 15 mm (9/16") - 81902164

    $15.46
    $13.97
    0
  47. 9% off

    PSS PYI T-Bolt Clamp Tip Jackets (25-Pack) - CJT14.25

    $15.42
    $13.94
    0
  48. 9% off

    AquaLock NPS Metric Female Swivel Adapter - 15 mm (19/32") x 1/2" - 81902158

    $15.33
    $13.86
    0
 
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About Hose & Pipe Fittings

Boat Hose Fittings

Boat plumbing fittings cover a wide variety of applications aboard. From thru hulls to raw water strainers, boat sink drains and vented loops, marine water pipe fittings options are extensive. Fabricated of bronze, plastic, marelon, and stainless steel the choices of fittings means doing your homework and purchasing just the right fitting for your project.

What is the best material for marine plumbing fittings?

Boat pipe fittings are available in bronze, brass, marelon, nylon, stainless and heavy-duty plastic. The best material is most likely one that matches your current plumbing, especially when joining fittings together. Complete removal and replacement of marine plumbing fittings offer the option to upgrade to higher quality material. Keep in mind that heavy bronze fittings may add unwanted weight to your vessel and depending on the application might not be necessary.

Marine plumbing is a pretty complicated business.

In through the hull, out through the transom. Loops, Y-valves, strainers, and exactly when do you need to add a seacock? Defender carries a full line of every fitting for every project, but perhaps a quick-connect fitting system would provide an uncomplicated weekend project for the average DIYer. One thing is for certain before any marine plumbing project begins, double-check the hose fittings required and have them all on hand and ready to go!

Marine hose fittings come in all shapes and sizes.

Marine hose fittings are available in 90-degree and 45-degree elbows, nipples, and couplers join different pipes together while end caps do just that, end the pipe. Tank fitting kits are available for full removal and replacement of all plumbing coming in and out of the water and holding tanks. Seacocks, thru hulls, strainers, and raw water manifolds are a bit more complicated while pipe to hose fittings and marine pipe reducers are pretty straightforward. Double-check your application and fitting shapes and sizes then get shopping at Defender Marine!