Deck Fills & Drains

  1. Whitecap Deck Fill

    $43.99 - $48.99
    1
  2. Edson Universal Pumpout Nozzle with Splash Guard - 27220

    $77.99
    0
  3. Plastimo Stainless Steel Winch/Deck Filler Key - 61804

    $33.99
    1
  4. Groco Adjustable Collapsible Spanner Wrench - SW-2531

    $23.99
    0
  5. 19% off

    Whitecap Pull Up Deck Fill

    $61.99 - $65.99
    $52.64 - $65.99
    0
  6. Dometic NozAll Deck Pump-Out Adapter

    $31.99 - $32.99
    1
  7. 19% off

    Whitecap Push Up Deck Fill

    $63.99 - $74.99
    $51.83 - $74.99
    1
  8. Whitecap Deck Fill Cap Replacement with Chain - 6061C

    $22.99
    0
  9. Sea-Dog Thru Hull with Scupper Valve - 520510-1

    $18.29
    0
  10. Davis Instruments Snap Tool Multi-Key - 382

    $14.03
    0
  11. 10% off

    Whitecap Replacement Nylon Deck Fill Cap

    $10.58
    $9.52 - $10.59
    1
  12. Whitecap Replacement Deck Fill Key - 6060C

    $10.52
    0
  13. Whitecap Nylon Deck Fill

    $21.99
    0
  14. Whitecap Replacement O-Ring for Deck Fill Cap - 6061OR

    $8.44
    0
  15. Whitecap Replacement Push Up Deck Fill Cap

    $40.99 - $47.99
    0
  16. Seachoice Self Bailing Scupper - 18281

    $41.99
    0
  17. Centek Vernay Scupper Drain Fitting

    $60.99
    0
  18. Forespar Replacement Waste Deck Fill - 907004

    $24.76
    0
  19. Seachoice Self Bailing Scupper - 18271

    $16.78
    0
  20. T-H Marine Flush Mount Scupper Valve Assembly

    $12.62
    0
  21. White Water Wire Deck Plate Key - 1350KY

    $7.44
    0
  22. Perko Deck Fill - 1313DP0CHR

    $22.99
    0
  23. Forespar CF254 Flush Head Deck Drain with Hose Tailpipe - 906038

    $21.56
    0
  24. Forespar Replacement Water Deck Fill - 907003

    $24.76
    0
  25. T-H Marine Push-In Overflow Drain Tube

    $12.74 - $37.99
    0
  26. Whitecap Stainless Steel Waste Fill Adapter - 6126ADPT

    $62.99
    0
  27. Forespar CF251S Marelon Mushroom Head Thru-Hull with Screen - 906013

    $18.36
    0
  28. Perko Fuel System Replacement Locking Gas Cap - 1324DP1BLK

    $35.99
    0
  29. T-H Marine All Purpose Drain/Hatch Drain

    $5.91
    0
  30. 22% off

    Perko Locking Deck Fill - Diesel - 0599DPDCHR

    $65.99
    $51.29
    0
  31. T-H Marine Overflow Drain Tube - ODT-2T-DP

    $39.99
    0
  32. Sea-Dog Scupper Valve - 520500-1

    $4.39
    1
  33. FillGuard Deck Fill Protection Devices - 3 Pc Gasoline Set - GASOLINEKIT

    $5.00
    0
  34. 33% off

    Perko Locking Gas Fill - 1399DP0CHR

    $53.99
    $35.99
    0
  35. Perko Locking Deck Fill - Gas - 0599DPGCHR

    $68.99
    0
  36. Whitecap Angled Scupper with Barb - 6559

    $28.99
  37. Groco SCUS Series Hose Barb Deck Drain

    $109.99 - $131.99
  38. Attwood Pro Series Rod Holder - 5010-4

    $28.99

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!