Deck Fills & Drains

  1. 23% off

    FillGuard Deck Fill Protection Devices - 3 Pc Gasoline Set - GASOLINEKIT

    $7.90
    $6.07
    0
  2. Sea-Dog Scupper Valve - 520500-1

    $7.05
    1
  3. Seachoice Splashwell Drain Tube - 19121

    $7.46
  4. Seachoice Drain Tube

    $8.66 - $17.61
    1
  5. Seachoice Scupper Valve - 18261

    $9.05
  6. T-H Marine All Purpose Drain/Hatch Drain

    $9.34
    0
  7. Seachoice Deck Fill Replacement Cap

    $10.04 - $32.70
  8. Seachoice Splashwell Drain Tube - 19131

    $10.41
  9. Seachoice Deck Plate Key - 32651

    $10.57
  10. White Water Wire Deck Plate Key - 1350KY

    $11.46
    0
  11. Whitecap S-7021 Replacement Cap and Chain - S-7022C

    $12.18
  12. Whitecap Livewell Filter Screen - P-3104

    $12.26
  13. Whitecap Brass Drain Tube - S-5064C

    $12.75
  14. Whitecap Replacement O-Ring for Deck Fill Cap - 6061OR

    $12.92
    0
  15. Whitecap Nylon Deck Fill Replacement Cap

    $13.53
  16. Whitecap Sink Strainer Assembly - P-2102C

    $13.85
  17. Seachoice Deck Plate Key and Tool - 32671

    $14.45
  18. Whitecap Replacement Deck Fill Key - 6060C

    $15.46
    0
  19. Whitecap Replacement Nylon Deck Fill Cap

    $16.05
    1
  20. Whitecap Deck Plate Key - 6060

    $16.41
  21. T-H Marine Flush Mount Scupper Valve Assembly

    $16.63 - $19.17
    0
  22. Whitecap Universal Deck Plate Key - S-7041P

    $16.99
  23. Seachoice Nylon Deck Fill with Cap

    $17.18 - $19.80
  24. Seachoice Twist 'n' Lock Deck Plate

    $17.29 - $48.76
  25. Whitecap Transom Well Drain Tube - S-3818C

    $17.97
  26. T-H Marine Push-In Overflow Drain Tube

    $19.34 - $50.22
    0
  27. Seachoice Pry-Up Deck Plate

    $19.51 - $60.44
  28. Seachoice Self Bailing Scupper

    $22.94 - $63.36
  29. Perko Surface Mount Scupper Valve Assembly - 0365DP

    $23.43
  30. T-H Marine Large Rectangular Scuppers - LRS-2-DP

    $24.00
    0
  31. Davis Instruments Snap Tool Multi-Key - 382

    $25.80
    0
  32. Whitecap Livewell Drain Thru Hull

    $25.81 - $27.40
  33. Seachoice Gas Deck Fill with Cap & Beaded Chain Tether - 32041

    $25.84
  34. Perko Polymer Gas Fill - 1613DP0BLK

    $25.94
  35. Whitecap Chrome Plated Zinc Hose Deck Fill with Splash Guard - S-7021C

    $26.22
  36. T-H Marine Flow-Max Ball Scupper - FMS-1-0-DP

    $26.37
    0
  37. Sea-Dog Thru Hull with Scupper Valve - 520510-1

    $27.49
    0
  38. Perko Flush Mount Cockpit Scupper - 0285DP

    $31.24
  39. Groco Adjustable Collapsible Spanner Wrench - SW-2531

    $32.70
    1
  40. Whitecap Nylon Deck Fill

    $32.70
    0
  41. Whitecap Garboard Drain Plug - 6351C

    $34.16
  42. Perko Deck Fill - 1313DP0CHR

    $35.62
    0
  43. Whitecap Deck Fill Cap Replacement with Chain - 6061C

    $35.62
    1
  44. Seachoice Gas Deck Fill with Cap & Strap Tether - 32011

    $35.62
  45. Whitecap Replacement Deck FIll Cap and Chain - 6061

    $35.62
  46. Whitecap Nylon Cockpit Scupper

    $35.62
  47. Forespar MF 830 Deck Fill

    $36.75 - $42.59
  48. Whitecap Stainless Steel/Nylon Scupper with Hose Barb - 6561

    $41.46
 
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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!