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: SFVHT Prime/Purge valve, manual, high temp. Price £539.50 Description 3*1/16".50 mm bore, 300C/6'000psi, SS