... losing in 1 min under 10KPa Gas Valve for Gas Appliance, for gas cooker, gas heater..To close the gas ... the gas heater extinguish suddenly in working state, this protector will power off and close the gas quickly to ... such as poisoning, fire and gas explosion etc. Design for use to control natural gas, coal gas and liquefied ... pressure losing in 1 min under 10KPa Gas protector for Gas Appliance (ZCQ-18B)