... Quality Guarantee 4)Good Service After Sale 5)Overpressure Protect 1 RPJ41F Gas Blowdown Valve1.1 The outside ... C)-29~+130ConnectionFlangeMaterialCast steelCharacter1 Applied for kinds of gas with different cleanness2 The seal reliable, durable3 stall ... used for gas transmission pipeline, regulating station, city gas pipe networkMediamanufactured coal gas, LPG, air, gas,town gas, natural gas with low ...