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soft sealing butterfly valve

Soft sealing butterfly valve

Soft sealing butterfly valve is suitable for water supply and drainage and gas pipelines with temperature ≤120℃ and nominal pressure ≤16MPa for food, medicine, chemical industry, petroleum, electric power, urban construction, light textile, papermaking and other water supply and drainage and gas pipelines.

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Main features of the soft sealing butterfly valve 

  1. Novel and reasonable design, light weight, quick opening and closing.
  2. Small operating torque, convenient operation, labor-saving and smart.
  3. It can be installed and maintained in any position.
  4. The seals can be replaced, and the sealing performance is reliable and can achieve zero leakage of bidirectional sealing.
  5. The sealing material has the characteristics of aging resistance, corrosion resistance and long service life.

Wafer soft sealing butterfly valve adopts standard

  • 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
  • Structure 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 of soft sealing butterfly valve

Nominal diameter DNmm 50～2000
Nominal pressure PNMPa 0.6 1.0 1.6
Test pressure PsMPa Strength test 0.9 1.5 2.4
Seal 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

 

The material of the main parts of the soft sealing butterfly valve

Part Name Material
valve body Ductile iron, cast steel, alloy steel, stainless steel
Butterfly Grey cast iron, nodular cast steel, cast steel, stainless steel and special materials
sealing ring All kinds of rubber, PTFE
stem 2Cr13, stainless steel
filler O-ring, flexible graphite

 

Wafer soft seal butterfly valve sealing material

Material variety Neoprene Nitrile rubber Ethylene propylene rubber Teflon Silicone Rubber fluororubber
code × or 0rJ XA or orJA XB or orJB xC , JC or 0rF XD or orJD ×E or orJE
temperature resistance 82℃ 93℃ 150℃ 232℃ 250℃ 204℃
Minimum temperature resistance -40℃ -40℃ -40℃ -268℃ -70℃ -23℃
Applicable working temperature ≤65℃ ≤80℃ ≤120℃ ≤200℃ ≤200℃ ≤180℃

Main dimensions and weight of wafer soft sealing butterfly valve (PN1.0/1.6MPa)

DN( mm) A B C D1 L n-Φ K E 4-Φ1 Φ2 G Weight WT (kg)
50 140 80 43 125 32 4-19 77 57.15 4-6.7 12.6 100 3.34
65 152 89 46 145 32 4-19 77 57.15 4-.67 12.6 120 3.94
80 159 95 45.21 160 32 8-19 77 57.15 4-.67 12.6 127 4.05
100 178 114 52.07 180 32 8-19 92 69.85 4-10.3 15.77 156 5.48
125 190 127 55.5 210 32 8-19 92 69.85 4-10.3 18.92 190 7.66
150 203 139 55.75 240 32 8-23 92 69.85 4-10.3 18.92 212 8.5
200 238 175 60.58 295 45 8-23 115 88.9 4-14.3 22.1 268 25
250 268 203 68 350 45 12-23 115 88.9 4-14.3 28.45 325 31.4
300 306 242 76.9 400 45 12-23 140 107.95 4-14.3 31.6 403 45.9
350 368 267 76.17 460 45 16-23 140 107.95 4-14.3 31.6 436 54

 

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