... joint 3.ISO:9001:2000,CE,ROHS,CQC 1.zero pressure solenoid valve2.plastic valve body ,brass joint3 ... :9001:2000,CE,ROHS,CQCFLZ-5 is a zero pressure solenoid valve,the operational pressure of this ... .It avoids the high malfunction ratio of traditional zero-pressure solenoid valves and the flaws of high - ... pressure solenoid valves that cannot turn on or low flow rate under low water pressure ...