Prime/Purge valve, manual, high temp.Prime/Purge valve, manual/4" knob, high temp. Back to: PRIME/PURGE VALVES Prime/Purge valve, manual, high temp. Product Code: SFVLHT Prime/Purge valve, manual, high temp. Price £569.00 Description 3*1/16".75 mm bore, 300C/6'000psi, SS