supply of water locking unit. , water locking unit (water check valve assembly with pneumatic operated) (technical specification:- 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) oper ating 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 maximu m) [ warranty period: 30 months after the date of delivery ] ]