[Tianjin Jinzhong Ji HVAC purification equipment to recommend the star product -] leafy exhaust port for the corridor, windowless room and stairwell before the smoke chamber. Pressure (multi-leaf delivery) outlet damper, smoke chamber and mounted on the front of the elevator walkway, usually in a normally closed state. Installation form is divided into vertical and horizontal. Pressure (multi-leaf delivery) usually normally closed electric outlet dampers, 24V power to open the valve manually open the valve cable, the output signal of the valve opening. Leafy exhaust port as well as 280 degree auto-off feature. Installed in the walkway or smoke before the room, manual exhaust port windowless room at the valve exhaust system that can mounted on a ceiling or mounted on the side wall. [Tianjin Jinzhong Ji HVAC purification equipment to recommend the star product - damper damper 280] should be normally open, also known as high-temperature fire dampers, typically installed in a high-temperature environment ventilation ducts, when the temperature reaches 280 after fusible alloy melts, the valve is closed damper pictures, but you can use 24V control signals. If that is the 280 smoke damper should be normally closed, install the control center when the fire broke out in the exhaust pipe so that it opens the smoke signals are given when the temperature reaches 280 fusible alloy melts valve is closed, is a two actuations of the valve. Damper prices, Tianjin Jinzhong Ji Alibaba Gold Supplier, provided by the Tianjin Tianjin Jinzhong Ji HVAC dampers purification equipment. Tianjin Jinzhong Ji HVAC purification equipment Limited (www.Jzjnt.com) is a leader in Tianjin, fans, ventilation equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In the group leadership with the staff warmly welcome all inquiries negotiations to create a better future for the base.