Deck Fills & Drains

  1. Perko Unmarked Fill Cap

    $103.18 - $271.93
  2. T-H Marine Push-In Overflow Drain Tube

    $17.15 - $50.53
    0
  3. Perko T-Handle Garboard Drain Plug - 0266DP0PLB

    $116.68
    0
  4. Sea-Dog Scupper Valve - 520500-1

    $7.33
    1
  5. Beckson Screw Type Drain Plug - 1"

    $7.78 - $8.93
  6. Jabsco Water Pressure Regulator - 44411-1045

    $101.83
    2
  7. Forespar Garboard Drain Tube with Plug

    $33.43
    0
  8. Seachoice Self Bailing Scupper

    $18.86 - $47.83
  9. Perko Chrome Plated Angled Neck Vented Deck Fill

    $70.78
  10. Perko Chrome Cockpit Scupper

    $251.68 - $354.28
  11. Perko Fuel & Water Fill

    $55.93
  12. T-H Marine Large Rectangular Scuppers - LRS-2-DP

    $20.77
    0
  13. T-H Marine Flow-Max Ball Scupper - FMS-1-0-DP

    $22.81
    0
  14. Perko Fuel System Replacement Locking Gas Cap - 1324DP1BLK

    $47.83
    0
  15. Perko Flush Mount Cockpit Scupper - 0285DP

    $26.72
  16. Whitecap Replacement Deck FIll Cap and Chain - 6074C

    $47.83
  17. Whitecap Universal Push-Up Deck Fill Replacement Cap

    $77.53 - $88.33
  18. Whitecap Replacement Pull-Up Threaded Cap with Chain - 6063

    $55.93
  19. Whitecap Livewell Drain Thru Hull

    $23.08 - $27.25
  20. Whitecap Transom Well Drain Tube - S-3818C

    $16.10
  21. T-H Marine PVC Push-In Drain Plug

    $12.51 - $17.41
    0
  22. T-H Marine Overflow Drain Tube - ODT-2T-DP

    $50.53
    0
  23. 19% off

    Scandvik Flush Shower Drain - 10352

    $25.15
    $20.24
  24. Camco Water Pressure Regulator - 40055

    $21.10
    0
  25. Perko Replacement Vented Flip Top Cap - 0795DP0BLK

    $39.73
  26. Whitecap Stainless Trim Nylon Scupper with Hose Barb - 6561

    $41.08
  27. 9% off

    T-H Marine Flush Mount Scupper Valve Assembly

    $14.48 - $17.77
    $14.48 - $16.06
    0
  28. T-H Marine Cockpit Scupper Drain - CSD-92-DP

    $88.33
    0
  29. Attwood Drain Plug Kit - 17211-3

    $8.95
    0
  30. Whitecap Brass Screw Type Bailer Plug

    $10.56 - $12.51
  31. Attwood Deck Fill with Gasoline Imprint - 66406-5

    $47.83
  32. Seachoice Gas Deck Fill with Cap & Beaded Chain Tether - 32041

    $21.10
  33. Seachoice Splashwell Drain Tube - 19131

    $8.64
  34. Seachoice Drain Tube

    $7.24 - $17.18
    1
  35. Seachoice Deck Plate Key - 32651

    $8.78
  36. Seachoice Deck Plate Key and Tool - 32671

    $11.92
  37. Perko Surface Mount Scupper Valve Assembly - 0365DP

    $20.67
  38. Whitecap Replacement Deck FIll Cap and Chain - 6061

    $35.68
  39. Perko Flush Mount Drain

    $93.73 - $113.98
  40. Seaview InteliPlug Pro Captive Drain Plug & Garboard Assembly - SVIPPRO

    $34.62
    0
  41. T-H Marine Drain Plug

    $12.36 - $13.74
    0
  42. T-H Marine All Purpose Drain/Hatch Drain

    $8.19
    0
  43. T-H Marine Floor Drain and Vent

    $9.43 - $11.65
    0
  44. White Water Wire Deck Plate Key - 1350KY

    $8.02
    0
  45. Sea-Dog Garboard Drain Tube with Plug - 520050-1

    $9.31
    0
  46. Sea-Dog Snap Handle Drain Plug - 520075-1

    $10.32
    0
  47. Groco SCUS Series Hose Barb Deck Drain

    $140.98 - $170.70
  48. Whitecap Aluminum Screw Type Bailer Plug

    $11.61 - $15.69

About Deck Fills & Drains

Cockpit Drains & Scuppers

Defender Marine offers a variety of cockpit drains, self-bailing scupper drains, and thru hulls with scupper valves. Thru hull valves and deck scuppers can be installed above or below the waterline and are offered in a polymer composite called Marelon, injection-molded nylon, or molded fiberglass.

Self bailers take the guess work out of cockpit drains.

When a boat is underway the pressure of water running out through the scupper opens a one-directional valve to release the water from the hull. When the scupper is closed, during rest, no water can leak into the boat. Self-bailers assist bilge pumps in keeping the hull free of excess water and are especially helpful on boats that are "wet" or take on water and spray while running.

What are deck drains made of?

Defender Marine offers scupper drains fabricated out of a variety of materials. Marelon is a polymer composite that never cracks or loses its shape, while injection-molded nylon is strong and UV resistant. Molded fiberglass cockpit drains, as well as polycarbonate boat scuppers, offer a few more options while shopping for scupper drains.

I've got a new scupper, now what?

Installation above the waterline is not complicated and can be a DIY project - just remember to measure twice! Also, examine that boat scupper drain that you have purchased and be certain that it will work for your application. Hose barb or threaded connections are questions that need to be answered before the project starts, as cockpit drains and scuppers must be plumbed to exit the hull. Be certain the project is completely prepped, and all gasket materials are ready to go before you start!