Resilient Seated Butterfly Valve
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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
| 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.