Quick exhaust valve large diameter exhaust valve> used independent heating system, central heating system, heating boilers, central air conditioning, floor heating and solar heating systems, exhaust pipes. Because usually dissolved in water have a certain air, and the solubility of air decreases with increasing temperature, so the water cycle process gas gradually separated from the water, and gradually come together to form large bubbles or column, Because of water added, so often gases. Give birth to the exhaust valve on the extension of this term, in everyday life to solve many problems.