1) High quanlity, High accuracy. 2) Professional domestic gas meter supplier 3) For Gas,LPG,CH4 and Other Gas and Air. Sichuan Haili Intelligent & technology Co.,Ltd is the only commercial gas meter supplier in Shanghai Expo 2010. mainly for gas, natural gas, LPG and other gas ConnectorM30 (G 1/2”)Material casingSteel or AluminumTube Center distance130 mm Or 110mmGas Flow directionFrom left to ...