... heaters, gas burn oven, gas appliances as control component. 1) Usage: it is suitable for gas heaters ... , gas burn oven, gas appliances as control component. 2) Working principle: thermocouple and supporting the use ... , to form closed loop current in the external magnetic solenoid valve and the incentive effect, in which, ... petroleum gas, the artificial coal gas. Gas magnetic valve JWM-K-05