The soft seal butterfly valve is suitable for regulating flow and intercepting medium on water supply and drainage and gas pipelines of food, medicine, chemical industry, petroleum, electric power, Taijin, urban construction, light textile, papermaking, etc. with temperature ≤ 120 ℃ and nominal pressure ≤ 16MPa. Its main characteristics are as follows:
1. The design is novel and reasonable, with unique structure, light weight and quick opening and closing.
2. Small operating torque, convenient operation, labor saving and dexterous.
3. It can be installed in any position and maintained conveniently.
4. The sealing element can be replaced, the sealing performance is reliable, and the two-way sealing is zero leakage.
5. The sealing material has the characteristics of aging resistance, corrosion resistance and long service life.
Standards adopted:
Design standard: GB / t12238-1989; lS0 10631-1994 or BS en593-1998
Flange connection size GB / t17241.6-1998; IS0 7005-2 or BSEN 1092-2002
Structural length: GB / T1 2221-1989; lS0 5752-1988 or BS en558-1
Pressure test: GB / t13927-1 992; JB / t9092-1999; lS0 5028-1993 or BS 6755-l-1986
Main technical parameters
Nominal diameter DN (mm) 50 ~ 2000
Nominal pressure PN (MPA) 0.6 1. O 1.6
Test pressure PS (MPA) strength test 0.9 1.5 2.4
Sealing test 0.66 1.1 1.76
Applicable media: air, water, sewage, steam, gas, oil, etc
Drive form: manual, worm gear drive, pneumatic drive, electric drive
Material of main parts
Part name material
Valve body: ductile iron, cast steel, alloy steel, stainless steel
Butterfly plate gray cast iron, nodular cast steel, cast steel, stainless steel and special materials
Seal ring of all kinds of rubber, polytetrafluoroethylene
Stem: 2Cr13, stainless steel
Packing 0-ring, flexible graphite
Main sealing materials
Materials: chloroprene rubber, nitrile rubber, ethylene propylene rubber, polytetrafluoroethylene, silicone rubber, fluorine rubber
Maximum temperature resistance: 82 ℃ 93 ℃ 150 ℃ 232 ℃ 250 ℃ 204 ℃
Minimum temperature resistance - 40 ℃ - 40 ℃ - 268 ℃ - 70 ℃ - 23 ℃
Applicable working temperature ≤ 65 ℃ ≤ 80 ℃ ≤ 120 ℃ ≤ 200 ℃ ≤ 200 ℃ ≤ 180 ℃