Pneumatic ventilation valve Overview Pneumatic ventilation valve with welded steel manufacturing, with short structure size, light weight, easy installation and so on. The valve driving torque is small, open and close flexible and easy to operate. Set oil seal ring on the body, no visible gap between the seal pair, small leakage rate. Expansion gap between the disc and the body is large, can effectively prevent stuck phenomenon caused by thermal expansion and contraction. The valve can be equipped with a variety of drives, such as manual means, worm gear, pneumatic, electric devices. Ventilation butterfly valve is widely used in metallurgy, petrochemical, power, building materials, mining, etc. The main technical parameters Nominal pressure (MPa) 0.05MPa leakage rate of 3% medium velocity 25m / s Suitable medium hot and cold air, flue gas temperature strength test 0.1MPa medium -30 ℃ ~ -350 ℃ attachment options: Depending on the requirements of the control and choose the following accessories: back to the hearing: Also called limit switches, remote switch signal feedback (optional explosion proof). Solenoid valve: double acting election two five-pass, two-way single-action option (optional explosion proof). FRL: You can air regulator, filter, cylinder lubricating. Hand wheel: turn the hand wheel mechanism can be achieved manually open and close the valve. Electrical locator: 4 ~ 20mA input signal, valve adjustment. Order: This product is factory direct supply products, for (can be customized), when ordering the special configuration of the following detailed description parameters: (example: valve type, drive, connection type, structure type, nominal pressure, nominal diameter The input signal, sealing surface material, body material, suitable temperature, whether with attachments) Contact Inquiry ----> OK price ----> Fax contract ----> contract ----> Pay deposit ----> deliverables ----> settle payment