Resilient Seated Butterfly Valve
Resilient Seated Butterfly Valve Resilient Seated Butterfly Valve Resilient Seated Butterfly Valve
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Resilient Seated Butterfly Valve

PTFE Wafer Butterfly Valve

PTFE wafer butterfly valve uses a wafer-type connection and features a polytetrafluoroethylene (PTFE) seat with FDA food safety certification.

Applications

PTFE wafer butterfly valves can be used for various applications including:

  • Wastewater transport
  • High-temperature and high-pressure steam transport
  • Food-grade media transport
  • Seawater transport
  • Conveyance of corrosive substances such as acids and bases
Basic Information
Size Range
DN50-DN600
Temperature Range T
0-120℃
Maximum Allowable Operating Pressure PN
1.0Mpa
Pressure Rating
1.5Mpa (Shell)
1.0Mpa (Seal)
Applicable Media
Freshwater, seawater, air, weak acid-base, and so on.
Materials
No. Part Material No. Part Material
1 Valve Body Cast iron, cast steel 6 Worm Gear Cast Steel
2 Valve Disc Stainless steel lined with PTFE and cast steel lined with PTFE 7 Bolts Stainless Steel
3 Valve Seat FTFE 8 O-Ring NBR
4 Upper Stem Stainless Steel 9 Lubricating Sleeve Aluminum Bronze
5 Lower Stem Stainless Steel 10 Gasket Spring Steel
Specifications
Specifications
Size ØD H1 H2 H3 L1 M*M D1 D2 n-Ød2
ASME EN(PN10) EN(PN16) JIS AS
DN50 121 125 125 120 114 75 140 11 43 11*11 72 50 4-Ø7
DN65 140 145 145 140 127 82 150 11 46 11*11 72 50 4-Ø7
DN80 152 160 160 150 146 90 160 11 46 11*11 72 50 4-Ø7
DN100 191 180 180 175 178 118 178 14 52 14*14 92 70 4-Ø10
DN125 216 210 210 210 210 131 190 17 56 17*17 92 70 4-Ø10
DN150 241 240 240 240 235 145 200 17 56 17*17 92 70 4-Ø10
DN200 299 295 295 290 292 173 240 22 60 22*22 125 102 4-Ø12
DN250 362 350 355 365 356 208 273 22 68 22*22 125 102 4-Ø12
DN300 432 400 410 400 406 244 310 27 78 27*27 150 125 4-Ø14
DN350 476 460 470 445 470 284 346 27 78 27*27 150 125 4-Ø14
DN400 540 515 525 510 521 320 375 40 102 36*36 175 140 4-Ø18
DN450 578 565 585 565 584 340 406 40 114 36*36 175 140 4-Ø18
DN500 635 620 650 620 641 365 438 50 127 46*46 210 165 4-Ø22
DN600 749 725 770 730 756 446 495 50 154 46*46 210 165 4-Ø22
Certifications
Item Standard Optional Standard
Design & Manufacture GB12238-89 ISO/DIN10631-91, AP1598
Face to Face Dimension GB12221-89 ISO5752-88
Flange Connection GB9113.1-2000, GB/T9119-2010 ANSI.B16.5, ISO7005, JIS2220:2004, DIN2532
Valve Test GB/T13927-92 ISO/DIN 5208-87
Valve Mark GB12220-89 ISO/DIN 5209-87
Valve Supply Requirements GB/T12252 ／
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