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 standard thru-hull fittings in the cockpit and on the hull exterior. Features: Prevents Backwash Chemical Resistant Materials Thermo-Plastic Flapper

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 standard thru-hull fittings in the cockpit and on the hull exterior. Features: Prevents Backwash Chemical Resistant Materials Thermo-Plastic Flapper

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 thru-hull fittings in the cockpit and on the hull exterior. Features: Prevents Backwash Chemical Resistant Materials Thermo-Plastic Flapper