YFM Pneumatic operator PFA Lined Diaphragm Valve for chemical industry
Product Description
1.Lined pneumatic diaphragm valve consists of actuator and weir type diaphragm valve. The piston pneumatic actuator can be PTFE coated, with the advantage of high thrust and economic function due to the smooth face, strong sealing.
The diaphragm valve cavity and diaphragm pad are lined by PTFE/PFA/FEP for realizing corrosion resistance performance. When the signal pressure input into diaphragm chamber (piston chamber), the pressure on the diaphragm (piston) generate the thrust, making the spring compressed, at the same time the valve stem, disc, diaphragm connected to push rod will move accordingly, until the thrust and the reaction force of the spring is balanced. At this time the push rod is not moving, and keep in a certain position, thus to realize the adjusting function. On the other hand, the pistons thrust will open or close the valve, also realize quick on-off valve function.
This valve channel is simple, without packing gland and with the advantages of little resistance, large flow rate. It is popular applied in cutting and adjusting the medium of high poisonous-corrosive, strong viscosity, granule, fiber for automatic industry, such as petrochemical, power, metallurgy, paper etc.
2.Operating method: electric, pneumatic, hydraulic
3.Lining material: PFA, FEP, GXPO etc.
