SHURFLO In-Line Check Valve - 1/2" Barbs. Quick and easy installation. Refer to manufacturer recommendations and installation guidelines to ensure a proper fit. Specifications for SHURFLO In-Line Check Valve: Manufacturer: SHURFLO Color: Black Features of SHURFLO In-Line Check Valve Allows flow in one direction only Safeguards against backsurge up to 100 PSI Small size easy installation Package Contents: SHURFLO In-Line Check Valve SHURFLO 340-001: In-Line Check Valve - 1/2" Barbs