... Co.Ltd HK-J2.5H membrane is a volumetric gas meter diaphragm gas meter.It has a beautiful shape, small size, ... .HK-J2.5H household gas meter is the ideal phenotype, mainly for gas, natural gas, liquefied petroleum gas and other gas volume measurement. 1) Compact ... case is electro dusted, which insures nice appearance, moisture-proof, gas corrosion-resistant and high impact-resistant.3) Sealing is good ...