supply of water locking unit (water check valve assembly with pneumatic operated) etc.water locking unit (water check valve assembly with pneumatic operated) etc.,water locking unit (water check valve assembly with pneumatic operated) . technical specificati on i)shape of assembly -y type (normally open),aisi - 304 (ss) ii)inlet port (water) - 1/2 (female thread ends) iii) outlet port (water) -1/2 (female thread ends) iv) inlet port(pneumatic) - 1/4 v)exhaust port(pneumatic ) - 1/ 4 vi) operating temperature 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 ]