Introduction of rubber lined flange soft seal butterfly valve

Rubber lined flange butterfly valve is to vulcanize rubber and the valve body in the flange butterfly valve into one body through high temperature. According to end connection, it has flange type rubber lined butterfly valve and wafer type rubber lined butterfly valve. With different working conditions, different sealing material is used to ensure the normal use of rubber-lined flanged butterfly valve in different application places. Rubber-lined soft sealing flange butterfly valve not only has the characteristics of anti-corrosion, wear-resistant, non-toxic, mildew-proof,etc,. also has reliable sealing performance. 

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.

The main technical parameters for rubber-lined soft sealing flange butterfly valve: 

Nominal diameter of rubber lined flange butterfly valve: DN50mm-DN2000mm; 

Nominal pressure of rubber lined flange butterfly valve: PN1.0MPa-1.6MPa; 

Working temperature of rubber lined butterfly valve: ≤80℃; 

Material for main parts in flange butterfly valve: 

Valve body: cast iron, ductile cast iron, carbon steel, stainless steel; 

Valve disc: cast iron, ductile cast iron, carbon steel, stainless steel, carbon steel fully covered with rubber or fluoroplastic; 

Valve stem: carbon steel, stainless steel; 

Valve seat sealing ring: Natural rubber(NR), chloroprene rubber adhesive(CR), acrylonitrile-butadiene rubber(NBR), EPDM, FKM. 

Applications of rubber-lined soft seal flange butterfly valve: 

Rubber-lined soft seal flange butterfly valves are widely used in water conservancy, chemical, pharmaceutical, electric power and other industries and are used for opening and closing on pipelines of steam, water and oils,etc.