... 0/1.6MPa 3)ISO9001:2008, 27/93 EC 4)Established in 1987 one way water valve 1. Structure ... valve is mainly consisted of body, stem, disc, seat and driver(lever, gearbox, pneumatic and electric Actuator ... ) and so on. On off and controlling flow of valve are made by ... , quick 90 degree on-off operation.3. Disc has two-way bearing, perfect seal, without leakage under ...