supply of water locking unit .water locking unit .,water locking unit (water check valve assembly with pneumatic operated) . technical specificati oni)shape of assembly -y type (normally open),aisi - 304 (ss) ii)inlet port (water) - 1/2 (female thread ends) ii i) outletport (water) -1/2 (female thread ends) iv) inlet port(pneumatic) - 1/4 v)exhaust port(pneumatic ) - 1/4 vi ) operatingtemperature range of actuator - (-10 degree to +180 degree centigrade) vii)actuator size - 40 to 125 mm viii)operating pneumatic pressure range - 4 bar to 10 bar. ix) operating pneumatic pressure maximum - 10 bar maximum. [ warranty period: 30 months after the date of delivery ]