Check Valves for Rotary Vane Compressors Specs_Rapid Bacteria Establishment This is the rubber gasket

This is the rubber gasket found at the top of the pump just underneath the lid

UltraKlean™ BioBalls™ (#5 in image above) can be ordered here

simply cut to fit the size tubing you are using

(2) 1½" cord stopper for conduit sleeve

AquaForce® 1000 Solids Handling Waterfall Pump

Check Valves for Rotary Vane Compressors Specs_Rapid Bacteria Establishment This is the rubber gasketCheck Valves for Stratus Rotary Vane RV Series Compressors Installs on the inlet side of the rotary vane compressor Installs between compressor and air filter (air filter not included) Prevents back flow of water in air lines RVC Check Valve for RV33 Item RVC fits RV33 units with 1 4 connection Assembly with check valve threads to the compressor air inlet and air filter threads into RVC check valve assembly Air filter is sold separately Prevents back