Mar.26.2025
Compressed air or gas is used to operate pneumatic butterfly valves. The pneumatic signal is received by the actuator, which is attached to the valve shaft, and turns the disc to open or close the valve. The actuator can be either single-acting or double-acting.
Pneumatic butterfly valves are widely used in natural gas, oil chemical industry, metallurgy, papermaking, power, mining, printing and dying, biological pharmacy, daily chemicals, foodstuff and beverage, water treatment and air treatment, etc. For automatic control and adjustment control of fluid, together with automatic pneumatic meters.
Pneumatic actuator uses new-style AT pneumatic actuator, with double-acting and single-acting types (spring reposition), driven by gear and rack with high dependability. big diameter valves are driven by AW pneumatic actuator in a pull-extraction manner, with reasonable structure and are large output torque as well as double-acting and single-acting type (spring reposition). Refer to our stylebook of pneumatic actuators.
Uses rubber and fluoroplastic of full-lining rubber and fluoroplastic as sealing material. Elastic Seat is furnished with a high-precision butterfly plate to ensure zero leakage. Bushings are mounted on the bottom, middle and upper parts of the valve stem for supporting and rotary slippage, thus retaining minimum friction. The products are light-weight, small-sized and quick to start and close.
Using metal and fluoroplastic for seat sealing. Metal-sealed butterfly valves incorporate an orate seat with an elastic sealing ring and multilayer composite butterfly plate. 3-D eccentric sealing structure functions with small friction upon starting and closing, dependable sealing, anti-friction, high-temperature resistance, self-centering effect, little leakage and long life-span. Provided with the advantages of reasonable structure, lightweight, small size, dapper installation dimension, easy operation and quick on & off, the fluid control valves have been rapidly developed and most widely used.
