... users, 2,30 technology patents 2,BV&CE Cheap!! Gas detector alarm system with shut off valve 1. FeaturesLightweight ... use.Designed as gas pipe breakers for emergency use.Applicable in natural gas, liquid gas, manufactured gas.Ideal for low ... off on strong VibrationAutomatically close under strong vibrationApplicable MediaNatural Gas, GLP and non-corrosive gasesSealing materialNBR rubberValve body ...