Energy conservation and emission reduction are the development direction advocated by the country, and products with less energy consumption will be a direction for future development. The development trend of solar water heaters and air energy water heaters as low energy consumption products is good. However, due to some limitations of the product itself, it has certain limitations in meeting consumer needs, so comprehensive energy utilization has become another direction for the development of water heaters. As new energy products, solar water heaters and air water heaters are showing strong development momentum. Due to their unique performance, these two categories are rapidly expanding the market and have a strong response among consumers.

The gas water heater is mainly composed of a valve body assembly, a main burner, a small fire burner, a heat exchanger, a safety device, etc. It also includes the flue of a flue water heater and the forced exhaust device of a forced exhaust water heater. The valve body assembly controls the entire working program of the water heater, including water valves, gas valves, microswitches, and igniters. When installing a water heater, valves should be installed on the inlet, outlet, and gas pipes.