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

Rubber Lug Butterfly Valve

Applications

The rubber lug butterfly valves can be used in water conveyance systems, seawater pipeline systems, gas pipeline systems, and weak acid-base transport systems.

Basic Information
Size Range
DN40-DN600
Temperature Range T
0-100℃
Maximum Allowable Operating Pressure PN
1.0-1.6Mpa
Pressure Rating
1.5-2.4Mpa (Shell)
1.1-1.76Mpa (Seal)
Applicable Media
Freshwater, seawater, air, weak acids-bases, etc.
Materials
No. Part Material No. Part Material
1 Valve Body Cast Iron, Stainless Steel, Cast Steel, Aluminum Bronze. 8 Worm Gear Cast Steel
2 Valve Disc QT450 Nickel Plated, QT450 Nylon Coated, Aluminum Bronze, Stainless Steel 304, Stainless Steel 316, Stainless Steel 316L, Stainless Steel 2507, Stainless Steel 1.4469, and Stainless Steel 1.4529. 9 Bolts 45#, Stainless Steel
3 Seat Backing Ring Phenolic, Aluminum Bronze. 10 O-Ring NBR
4 Valve Seat (Rubber) EPDM, NBR, FTFE, Silicone, Fluoroelastomer, Heat-Resistant EPM, and Wear-Resistant EPM 11 Retaining Ring 50#Mangalloy
5 Upper Stem 45#, 304, 316, 420 Stainless Steel 12 Thrust Washer 45#Galvanized Steel
6 Lower Stem 45#, 420 Stainless Steel 13 Gasket 45#Galvanized Steel
7 Retaining Rod UPVC, 45# 14 Lubricating Sleeve PTFE
Specifications
Specifications
Size ØD ØD1 ØD2 n-Ma n-Ød H1 H2 H3 M*M L1 L2
DN40 110 72 50 4-M16 4-Ø7 71 120 11 11*11 33.5 30
DN50 125 72 50 4-M16 4-Ø7 70 130 11 11*11 42 32
DN65 145 72 50 4-M16 4-Ø7 80 143 11 11*11 45 47
DN80 160 72 50 4-M16 4-Ø7 94 155 11 11*11 45 65
160 8-M16
DN100 180 92 70 8-M16 4-Ø10 108 170 14 14*14 52.1 91
DN125 210 92 70 8-M16 4-Ø10 122 190 17 17*17 55 112
DN150 240 92 70 8-M20 4-Ø10 134 210 17 17*17 56 146
DN200 295 125 102 8-M20 4-Ø12 167 243 22 22*22 61 194
295 12-M20
DN250 350 125 102 12-M20 4-Ø12 203 282 22 22*22 66 242
355 12-M24
DN300 400 150 125 12-M20 4-Ø14 241 310 27 27*27 77 292
410 12-M24
DN350 460 150 125 16-M20 4-Ø14 267 353 27 27*27 77 325
470 16-M24
DN400 515 175 140 16-M24 4-Ø18 310 380 40 36*36 87 380
525 16-M27
DN450 565 175 140 20-M24 4-Ø18 331 411 40 36*36 105 428
585 20-M27
DN500 620 210 165 20-M24 4-Ø22 379 468 50 46*46 130 474
650 20-M30
DN600 725 210 165 20-M27 4-Ø22 463 562 50 46*46 152 573
770 20-M33
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 ／
Features
  • Minimal Temperature Sensitivity:The unique end connection method of the rubber lug butterfly valves reduces susceptibility to temperature variations.
  • Easy Maintenance: Simple structure with fewer components makes our rubber lug butterfly valves easy to install and maintain.
  • Excellent Sealing Effect: The O-ring of our rubber lug butterfly valves exhibits excellent resistance to chemical corrosion, accommodating various fluid mediums and ensuring the valve remains leak-free when closed.
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