... gas heaters, gas burn oven, gas appliances as control component. 1) Usage: it is suitable for gas heaters, gas burn oven, gas ... electromagnetic valve is composed of gas safety protection devices, remove thermocouple ... incentive effect, in which, the gas absorption, when the flame, thermocouple rapidly ... gas path, and safety protection3) Scope: natural gas, liquefied petroleum gas, the artificial coal gas ...