Soft sealing butterfly valve is suitable for the temperature of 120 ℃ or less and nominal pressure of 16 mpa or less food, medicine, chemical, petroleum, electric power,; Metallurgy, urban construction, textile, papermaking, etc for adjusting flow rate on water supply and drainage, gas pipeline and the role of intercepting medium.

Second, the product features:

1, novel design, reasonable, unique structure, light weight, rapid opening and closing.

2, small operation torque, easy to operate, saving smart.

3, can be installed anywhere, and easy maintenance.

4, seal can be replaced, sealing reliable performance to achieve two-way sealing zero leakage.

5, sealing material ageing resistance, corrosion resistance, long service life, etc.

Third, D641X type pneumatic flange sealing butterfly valve with a standard:

Design standards: GB/T12238-1989;

LS0 or BS EN593-1998. 10631-1994

Flange connection size: GB/T17241.6-1998:

IS0 7005-2 or BSEN 1092-2002

Structure length: 2221 GB/T1-1989:

LS0 or BS EN558 5752-1988-1

Pressure tests: 1 GB/T13927-992; JB/T9092-1999;

LS0 or BS 6755 - l - 1986, 5028-1993