strainer check vavle: SIZE: 1/2'', 3/4'', 1'' 11/4'', 11/2'' , 2'' DN: 15, 20, 25, 32, 40, 50... Specification:Reducing valve1.Nominal pressure:1.6MPa 2.working medium:cold&hot water.gas.oil.CODEDNLHH17715401021521097716brass reducing valve50120174118 Strainer check vavle:SIZE: 1/2'', 3/4'', 1'' 11/4'', 11/2'' , 2''DN: 15, 20, 25, 32, 40, 50Nominal pressure :PN ≤1.6MPaApplicable medium: water,gas ...