Can be mounted to 1/2 in., 3/4 in. or 1 in. pipe or equivalent size tubing.Features ChemSaver drip-free shutoff that requires 10 PSI at the nozzle to open check valve. Standard diaphragm of EPDM with optional Viton available.Mounts to a 3/8 in. (9.5 mm) drilled in pipe or tubing.1/2 in. and 3/4 in. sizes include a mounting hole in upper clamp subassembly for mounting to flat surfaces. Maximum operation of 300 PSI (20 bar).Flow rate: 2.25 GPM (8.5 l/min) at 5 PSI (0.34 bar) pressure drop, 3.54 GPM (13.4 l/min) at 10 PSI (0.69 bar) pressure drop.