Cast Iron double orifice Air Vent Valve pipe safety valve
Double Orifice Air Valve used in the highest point of pipeline or where is air closed for central air-condition (make cold and heat), to exclude sewage pipe gas to clear the pipeline, but when pipeline in normal operation, internal of pipeline the medium of water containing 2 VOL of the chemical composition of natural gas will be produced. This gas will be enlarge slowly, that`s big effect for pipeline, it will happen air-close or turnoff, now the exhaust valve will exclude air on time, to enhance efficiency of pipeline cold and heat supply, can save energy, it`s the necessary products for central air-condition. Product using lift more than 5 years. Guarantee term of usage is 12 months.