1, the amount of air leakage is low, airtight performance. 2, the electric current consumption of small open 3, corrosion resistance strong damper legend symbols, long service life. (Made of stainless steel type) 4, the actuator drive flexible. Feedback, interlock signal accurately. Products in full accordance with the national standard, good quality damper Which standard production line, advanced equipment, technology and stability. Our main domestic large enterprises do OEM OEM production, while direct customers located in the central air-conditioning and fire ventilation equipment installation company, according to user needs, design and manufacture of various types of specifications ventilation, central air-conditioning end and fiberglass products. FH-KVD1 fire control valve features: 70 ℃ fuse action, the valve automatically closes. Manually shut down. Output off signal, interlock related ventilation equipment. Manually open. Manually adjust the valve opening angle. PY-SFD smoke damper PY-BSFD remote control smoke damper Features: Control Center input DC24V power 5.5kw exhaust fan, quickly open the valve. Manually open. Output Enable signal, and fire row machine interlock. Manual reset closed. 280 ℃ temperature sensor action exhaust axial fans, re-close the valve. PY-BSFD remote control can be far away from electric smoke damper open, manually open, manually shut down. Smoke dampers, fire protection components, typically installed in the pipe mechanical exhaust system, usually was turned on, when a fire closed the flue gas temperature reaches 280 degrees inside the exhaust pipe, and meet the leakage amount of smoke within a certain time and fire integrity requirements, from smoke fire retardant effect. Main material: carbon steel, galvanized steel, stainless steel. 1. Purpose (1) usually in a normally closed valve, either manually or automatically open fire, when the airflow temperature reaches 280 ℃, the temperature sensor action, the valve is closed; (2) allows the valve is closed by DC24V power; (electric type smoke damper) (3) or manual reset manually shut down; (4) closed DC24V electric reset; (automatic type smoke damper is suitable for manual operation inconvenient places) (4) signal output valve closed, with Other fire safety interlock device. Advantages: 1, low air leakage, airtight performance 2, the electric current consumption to open a small smoke Blower, Blower Hefei, Shou exhaust fan provided by Shandong GREAT Fan Air Conditioning Equipment Co.... Air Conditioning Equipment Co., Ltd. Shandong GREAT fan (www.greatfengji.com) is a leader in Dezhou, fans, ventilation equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customers needs. GREAT leadership in the staff warmly welcome all inquiries negotiations to create a better future GREAT.