Marine Plumbing & Ventilation

Winterizing DiverterSimplify winterizing procedures using the diverter in place of the cartridge. Follow your manufacturer's instructions for wint...

Pump Protector - 4ozEver get your pressure washer out in the spring, fire it up, and you see water leaking from the bottom of the pump with no wat...

Double Barb Inline Scupper Check Valve - 1-1/2" - BlackA great solution to provide a scupper check valve in the drain line.  Allows use of standar...

Double Barb Inline Scupper Check Valve - 1-1/8" - BlackA great solution to provide a scupper check valve in the drain line.  Allows use of standar...

Double Barb Inline Scupper Check Valve - 3/4" - BlackA great solution to provide a scupper check valve in the drain line.  Allows use of standard ...

Flow-Max™ Ball Scupper - ClearReplace your old worn-out flapper scupper with our new Flow-Max™ positive sealing ball scupper. A larger exit hole a...

Large Rectangular Scupper - WhiteThis large rectangular scupper is made for quickly draining decks above the waterline. Features: Can qui...

Scupper Flapper Repair KitThe flapper scupper repair kit should take care of any flapper replacement job.  The traditional flapper scuppers use mo...

Straight Barbed All-Purpose Drain - White1-3/8" White Concaive Head Drain. These molded drains, available in straight and 90-degree versions, offe...

Washdown Fitting with Shutoff ValveThis bulkhead-mounted washdown fitting is inexpensive, functional, easy to install, and rust-proof. This inject...

Washdown Valve with Chrome BaseA bulkhead-mounted washdown fitting that is inexpensive, functional, easy to install, and rust-proof. This injectio...

Push-In Drain Plug for 1-1/8" Thru-Hull & All Purpose DrainsThese push-in drain plugs are used to stop water flow through drains or overflows ...

Push-In Drain Plug f/1-1/2" Thru-Hull DrainsThese push-in drain plugs are used to stop water flow through drains or overflows from baitwell or liv...

AquaMax® Holding Tank Treatment - 1 Gallon - Spring Shower Scent AquaMax® Holding Tank Treatment’s advanced enzyme-powered formulas neutralize odo...

AquaMax® Holding Tank Treatment - 16 Toss-Ins - Spring Shower Scent AquaMax® Holding Tank Treatment’s advanced enzyme-powered formulas neutralize ...

AquaMax® Holding Tank Treatment - 32oz - Spring Shower ScentAquaMax® Holding Tank Treatment’s advanced enzyme-powered formulas neutralize odors an...

AquaMax® Holding Tank Treatment - 6-Pack - 8oz Liquid - Spring Shower ScentAquaMax® Holding Tank Treatment’s advanced enzyme powered formulas neut...

AquaMax® Holding Tank Treatment - 64oz - Spring Shower Scent AquaMax® Holding Tank Treatment’s advanced enzyme-powered formulas neutralize odors a...

Drain Valve Lubricant - 24ozFeatures: Prevents sticky valves Restores operation Coats plumbing lines for smooth tank outflow Works in both grey an...

Drain Valve Lubricant - Bilingual - 24oz Features: Prevents sticky valves Restores operation Coats plumbing lines for smooth tank outflow Works in...

Floor Plate for 565E Curve ToiletThis floorplate is suitable to mount the Porta Potti 565 to the floor/deck of boats or wherever you want. One sim...

Freshwater Solenoid Kit for Nano Toilets - 12VFeatures: Allows use of onboard pressurized freshwater system and freshwater pump to be used for flu...

Hold Down Kit for 550P & Campa XTThetford hold-down kit is produced for 550P and Campa XT models.This product may not be returned to the origi...

Hold Down Kit for Small Porta PottiThis hold-down kit will fit Thetford Porta Potti model numbers 92868, 92865, 92871, 92859 and 92862This product...