Deck Fills & Drains

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!

Deck Fills & Drains

Whitecap EPA Pull-Up Hose Deck Fill

Edson Universal Pumpout Nozzle with Splash Guard - 27220

Whitecap Hose Deck Fill

Groco Adjustable Collapsible Spanner Wrench - SW-2531

SHURflo Wall Mount Pressure Reducing Water Connection - 183-029-14

Sea-Dog Stainless Steel Hose Deck Fill

Jabsco Hose Coil Quick Release Connector - 3/4" Adapter - 31911-0000

Plastimo Stainless Steel Winch/Deck Filler Key - 61804

Perko T-Handle Garboard Thru-Hull Drain Plug - 0363DP0PLB

Whitecap Tee Handle Boat Drain Plug with Cable - S-0211C

Whitecap 30 deg. Angled EPA Pull-Up Hose Deck Fill

Perko Sealed Ratcheting Cap Fill - 0660DPG99A

Perko Chrome Plated Angled Neck Vented Deck Fill

SHURflo Wall Mount Pressure Reducing Water Connection - 183-029-18

Groco Garboard Drain with Plug

Jabsco Water Pressure Regulator - 44412-2045

Jabsco Water Pressure Regulator - 44411-1045

Perko Deck Fill Plate

Dometic NozAll Deck Pump-Out Adapter

Whitecap Pipe Deck Fill

Seachoice Drain Plug

Forespar Garboard Drain Flange with Plug

Seachoice Self Bailing Scupper

Perko Vented Gas Fill

Whitecap Deck Fill Cap Replacement with Chain - 6061C

Sea-Dog Replacement Drain Plug - 520041-1

Whitecap EPA 1/4-Turn Pull-Up Cap with Chain

Whitecap Replacement Push Up Deck Fill Cap

Jabsco Water Pressure Regulator - 44411-0045

Perko Replacement Vented Cap

Perko Water Inlet - 0499DP0CHR

Sea-Dog Snap Handle Drain Plug - 520070-1

Sea-Dog Thru Hull with Scupper Valve - 520510-1

Jabsco Water Pressure Regulator - 44412-1045

Perko Chrome Plated Straight Neck Vented Deck Fill

Perko Unmarked Fill Cap

Sea-Dog Washdown Water Outlet

Forespar Garboard Drain Tube with Plug

Whitecap Nylon 90 deg. Drain Tube Kit - S-3850

Whitecap Tapered Hose Deck Fill

Whitecap Nylon Deck Fill

Perko Surface Mount Scupper Valve Assembly - 0365DP

Seachoice Stainless Steel Deck Fill with Cap

Whitecap Transom Well Drain Tube - S-3818C

Groco SCUS Series Hose Barb Deck Drain

Perko T-Handle Garboard Drain Plug - 0266DP0PLB

Sea-Dog Stainless Steel Hose Deck Fill Replacement Cap

T-H Marine Large Rectangular Scuppers - LRS-2-DP

About Deck Fills & Drains

Cockpit Drains & Scuppers

Self bailers take the guess work out of cockpit drains.

What are deck drains made of?

I've got a new scupper, now what?

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