RBS SUPERCHARGERS will be CLOSED UNTIL Monday Aug 17thHousing ends are machined 37 degree flare so they can be installed inline or straight into the barrel valve with the O-ring that is provided with the check valve. Check valve is typically set at 20 to 200 pounds.
Wrench hex is 13/16" on each end.
Please specify Check Valve spring pressure when ordering and if you are not sure let RBS help you.