The 607 copper cold air door adopts a pneumatic (electric) mechanism to push the door panel, which closes and gradually locks the principle, fundamentally solving the disadvantages of other types of air doors such as loose closure, inflexible opening and closing, easy jamming, and serious leakage. It has the advantages of flexible and fast opening and closing, tight sealing, and no increase in pipeline flow resistance.
The air door adopts a combination welding structure of section steel and steel plate. The XGFM type air door panel is made of double-layer stainless steel and square steel composite manufacturing. Its sealing element is a stainless steel spherical plate fixed on the circumference of the frame. A single driving device plays a dual role in opening and closing the air door and locking the door panel; The door limit adopts new technology and techniques to ensure that the air door does not leak. It has the advantages of simple system, low power consumption, and stable operation.

Application of valves in water treatment system:
Pressure reducing valve: it is used to regulate the pressure of tap water, ensure that the water pipe and water consuming equipment bear the pressure within the safe range and prevent excessive water pressure.
Check valve: installed at the water pump outlet to prevent water from flowing back to the water pump and protect the water pump.
Water mixing valve: used for mixing cold and hot water, providing constant temperature hot water, commonly used in water heater and solar system.
Application of joints in water treatment system:
Garden irrigation: Connect faucets, water pipes and sprinklers with connectors to realize automatic watering of gardens.
Water purifier connection: the connector is used to connect each filter element of the water purifier as well as the water inlet and outlet to facilitate assembly and maintenance.
Water pipe connection: in a complex waterway system, connectors are used to connect hoses of different lengths to form a complete water supply network.