Role: In the event of a fire, the internal electric actuator opens the outlet pressure delivery outlet, warm sense smoke or manual fire alarm will be turned on, a positive pressure fan tower roof opens automatically pressurized air to air shaft front room by the stairs will be a steady stream of pressurized air outlet on the front air chamber, the front room to maintain a positive pressure to ensure the smoke will not spread stairwell pressurization outlet in the region, while giving space to escape . When the temperature is higher than 280 ° C were no longer escape the possibility of its internal fuse will blow, automatically shut down the cheapest air pressure delivery outlet, to prevent the fire from spreading. Application: National high-rise building fire smoke design specification, these parts should set up a separate mechanical exhaust system HEPA leak detection, leak detection can view and qualified, should be based on each station apparatus outlet resistance were the size. reasonable allocation, on a one-way flow between the same outlet or each filter air plane, each additional drag and resistance of each station uniform difference should be less than 5%. Cleanliness level equal to or higher than 100 clean room HEPA. Antechamber positive pressure ventilation outlet _ Plumper (certified) _ positive outlet provided by Dezhou Plumper ventilation plant. Dezhou Plumper ventilation plant (www.frtfsb.com) is a leader in Dezhou, fans, ventilation equipment, over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Rich ventilation equipment in leadership with the staff warmly welcome all inquiries negotiations to create rich, ventilation a better future.