Introduction of pneumatic EPDM lined concentric wafer type butterfly valve

Pneumatic rubber lined concentric wafer butterfly valve is composed of pneumatic piston actuator and rubber lined concentric wafer butterfly valve. The valve body and the disc are overall rubber lined, and the pinless disc has great anti-corrosion performance. This pneumatic rubber lined concentric wafer type butterfly valve is suitable for light acid mediums, used in medicine, chemical industry, chemical, petroleum, power, textile, paper making, and other water supply and drainage projects. 

Pneumatic actuated concentric wafer rubber lined butterfly valve is equipped with GT, AT, or AW type pneumatic actuator, through the mechanical transmission valve stem of the piston gear, output in angular stroke, input 4-20MA current signal through the valve positioner , change the rotation angle of the valve core(0-90°) to drive the valve stem, and the valve disc to rotate, to realize the opening, closing, and regulating of the butterfly valve. 

Standards used for pneumatic concentric wafer EPDM lined butterfly valve: 

Design standard: GB/T 12238-2008 

Face to face standard: GB/T 12221-2005 

Size standard: GB/T 9113 

Pressure and temperature: GB/T 12224-2005 

Testing standard: GB/T 13927-2008 

Testing and Inspect standard: 

Internal layer of lining: Electric spark detection; 

Inspect standard: GB/T 13927 

Nominal pressure: 1.6Mpa 

Shell pressure: PN*1.5 

Sealing pressure: PN*1.1 

Materials used for pneumatic EPDM lined concentric wafer butterfly valve: 

Body material: cast iron(CI), ductile cast iron(DI), carbon steel(CS), stainless steel(SS) 

Disc material: cast iron, ductile iron, carbon steel, stainless steel, EPDM lined or PTFE lined; 

Stem material: carbon steel, stainless steel; 

Sealing material: natural rubber(NR), chloroprene rubber(CR), Nitrile butadiene rubber(NBR), EPDM, PTFE, FKM. 

Belo Valve is a more than 15 years professional manufacturer for industrial valves, like butterfly valves( center line wafer butterfly valve, manual butterfly valve, lever driving butterfly valve, butterfly valve with worm gear box, lug type butterfly valve, soft seal butterfly valves, hard seal butterfly valves, flange butterfly valves, ductile cast iron butterfly valves, stainless steel butterfly valve), gate valves(including DINF4 gate valves, DINF5 gate valves, DIN3352 gate valves, rising stem gate valves, non rising stem gate valves, soft seal gate valves, hard seal gate valves, hydraulic gate valves, sluice valves), globe valves( DIN globe valves, bellows globe valves, electric globe valve), ball valves( welded ball valves, soft seal ball valves, stainless steel ball valves, WCB ball valves, ductile cast iron ball valves, API ball valves), check valves( wafer type check valves, swing check valves, rubber disc check valves, ball type check valve, foot valve/bottom valve), fire protection valves( grooved butterfly valves, grooved gate valves, grooved strainers, grooved check valves), hydraulic control valves,etc.

For more informations about pneumatic concentric wafer type rubber lined or PTFE lined butterfly valves, kindly contact us, more technical parameters and prices will be sent: