


Product ID: | Fire damper |
Application: | It is used in the wall piping ventilation system that requires fire resistance to prevent the fire from spreading along the Duct. |
Fuction: | 1.Manual opening or reset |
2.Close the valve through DC24V | |
3.Normally open.Valve will automatically close under fuse operation at 70ºC. | |
4.Manually adusting the openning angle of the blade within 0-90° | |
5.Output close signal of the valve Can output the signal optionally upon user's requirements. |


Quanmei Ventilation Equipment Co., Ltd. is located in the vibrant Shandong Dezhou. It is a modern high-tech enterprise park that integrates the design, development, manufacturing, sales, installation and technical services of central air-conditioning system engineering. Integrating science and technology, nature, culture and ecological environment in one park, beautiful environment, convenient transportation and superior geographical location.
The main products of the company include 3C exhaust fan, fire valve, muffler, fan coil tube, fan, new air conditioner, new wind unit, air valve, air conditioner, water tank, air outlet, air duct, cooling tower and other series of products.




1.What is the use of assistant tank in solar water heater?
A special quality assistant tank is design to control moxing of hot and cold water. Assistant tank increase the efficiency of
systems. Also there is no need of additional air vent, which reduce the cost of plumbing.
2. What is auxiliary tank solar geyser?
Assistant Tank For Solar Water Geyser is specially designed for non-pressure solar water heaters, it works mechanically without manual operation, avoiding water overflow when manual water refilling. With an assistant tank the solar water heater is always full of water.
3. What is the maintenance required?
Solar water heaters with assistant tank require minimal maintenance. Regular cleaning of the collector and the assistant tank is recommended to ensure the system runs efficiently. An annual check-up by a professional is also recommended.