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

Perko Chrome Cockpit Scupper

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

Whitecap Stainless Steel Scupper with Hose Barb

Perko Waste Deck Plate - 0524DP0CHR

Perko Deck Fill Plate

Whitecap EPA Pressurized System Deck Fill

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

Seachoice Gas Deck Fill with Locking Cap - 32051

Perko Unmarked Fill

Perko Water Inlet - 0499DP0CHR

Whitecap Gas Hose Deck Fill with Splash Guard - 6001

Whitecap Pipe Deck Fill

Whitecap Tapered Hose Deck Fill

Groco SCUS Series Hose Barb Deck Drain

Perko T-Handle Garboard Drain Plug - 0266DP0PLB

Jabsco Water Pressure Regulator - 44412-2045

Whitecap Stainless Steel Waste Fill Adapter - 6126ADPT

Jabsco Flush Mount Water Pressure Regulator - 44411-2045

Perko Straight Neck Vented Fill - 0591DPGCHR

Perko Angled Neck Vented Fill

Ronstan Andersen Automatic Bailer

Seaview InteliPlug ProXT Captive Drain Plug & Garboard Assembly Kit - SVIPPROXT

Whitecap Pull-Up Hose Deck Fill

Perko Unmarked Fill Cap

Jabsco Water Pressure Regulator - 44411-1045

Edson Universal Pumpout Nozzle with Splash Guard - 27220

Perko Sealed Ratcheting Cap Fill - 0660DPG99A

Whitecap Push Up Deck Fill

Whitecap Drain Tube Kit - 90 deg.

Perko Flush Mount Drain

Jabsco Water Pressure Regulator - 44412-1045

Perko Locking Deck Fill - Gas - 0599DPGCHR

T-H Marine Cockpit Scupper Drain - CSD-92-DP

Jabsco Water Pressure Regulator - 44411-0045

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

Whitecap EPA Pull-Up Hose Deck Fill

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

Whitecap Hose Deck Fill

Centek Vernay Scupper Drain Fitting

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

Whitecap Replacement Deck Fill Cap and Chain - 6167

Whitecap Replacement Push Up Deck Fill Cap

Whitecap Universal Push-Up Deck Fill Replacement Cap

Perko Straight Neck Vented Fill - 0583DP0STS

Perko Locking Gas Fill - 1399DP0CHR

Perko Chrome Plated Angled Neck Vented Deck Fill

Perko Chrome Plated Straight Neck Vented Deck Fill

Perko Locking Deck Fill - Diesel - 0599DPDCHR

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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