Solenoid Valve for RO System 2-way normally closed ... Pipe size:1/8",1/4" With TUV certificates Solenoid Valve for RO System 1. 2-way normally closed, 1 ... 8" & 1/4" pipe size; 2.Direct acting water solenoid valve; 3.Response time:6~20MSEL; 4.Fluid media: water; ... 50/60Hz, DC 24V9.Material of solenoid valve:Seals:EPDM, body: PP, Nylon;10.Reverse osmosis solenoid valve with CE TUV, ISO9001 approvement. ...