Cast Iron Pneumatic Operated Wafer Butterfly Valve
Cast Iron Pneumatic Operated Wafer Butterfly Valve
- Size: DN50 ~ DN500
- Body Material: Epoxy coated cast, Ductile Iron, SS304/SS316, WCB
- Disc Material: SS304/SS316, WCB, Aluminum Bronze, Nylon, Ductile iron
- Seal Material: EPDM, PTFE, NBR, VITON
- Work Temperature: -25~150 Degree
- Flanged Connection: ISO 5211 or DIN 3337 Standard
- Pressure Rating: PN10 / PN16 ANSI150, DIN16, JIS 10K/16K
- Medium: Air, water, steam, oil, etc
- Actuator Model: HPA Pneumatic Actuator Double Acting / Spring Return
- Protection Class: Weather proof – IP67
- Optional Accessories: Positioner, Limit Switch, Air Filter, Solenoid Valve, etc.
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Description
The Hearken Pneumatic Wafer Butterfly Valve is engineered for versatile and robust performance in demanding industrial environments. Featuring a Centerline Soft Seal Structure, this valve ensures reliable, bubble-tight shut-off by centering the disc in the valve bore, which minimizes seat wear and extends operational life. With an extensive range of material options for the body, disc, and seal, and available in sizes up to DN600, it is a highly adaptable solution for controlling liquids, gases, and corrosive media across a wide spectrum of temperatures and pressures.
Features & Benefits
- Reliable Bi-Directional Sealing: The proven centerline design provides a consistent, 360-degree seal between the disc and the resilient seat, delivering dependable, bi-directional, leak-free performance for both isolation and control applications.
- Industrial-Grade Durability: Constructed from rugged materials like Epoxy-Coated Ductile Iron, Stainless Steel, and WCB, the valve body is built to withstand high pressures and harsh external conditions. This makes the Hearken butterfly valve a long-lasting component in any industrial pipeline.
- Exceptional Versatility: A wide selection of materials allows this valve to be perfectly configured for your specific application—from general water service with EPDM seals to aggressive chemical handling with PTFE or VITON seals. The vast size range (DN40-DN600) makes it suitable for both standard and large-scale projects.
- High-Performance Automation: Equipped with a dependable IP67-rated pneumatic actuator, this valve offers fast and reliable automated control. It is suitable for both simple on-off service and precise proportional flow regulation, easily integrating into modern process control systems.
Parts and Material
 | No. | Part Name | Material |
| 1 | Valve Seat | Rubber/NBR/EPDM/PTFE | |
| 2 | Valve Disc | Carbon Steel/Stainless Steel | |
| 3 | Valve Body | Cast Iron/Carbon Steel/Stainless Steel | |
| 4 | Valve Stem | 45# Steel/2Cr13/Stainless Steel | |
| 5 | Sealing | Rubber/Viton/PTFE | |
| 6 | Bushing | PTFE Composite Bearings | |
| 7 | Stem Position Ring | PTFE/PEEK/Stainless Steel | |
| 8 | Circlip | Stainless Steel | |
| 9 | Solenoid Valve | Aluminum Alloy | |
| 10 | Pneumatic Actuator | Aluminum Alloy | |
| 11 | Air Filter | Aluminum Alloy + Polycarbonate | |
| 12 | Limit Switch Box | Aluminum Alloy |
Basic Butterfly Valve Outline Dimension(Unit:mm)
| DN | IN | L | H | H1 | L1 | L2 | H2 | D | D1 | D2 | N-D | Actuator Model |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 40 | 1 1/2″ | 33 | 147 | 53 | 153.7/188.3 | 72.5/95.5 | 92.3/121 | 80 | 110 | 68 | 4-16 | HPA052DA/HPA075SR |
| 50 | 2″ | 42 | 195 | 55 | 153.7/188.3 | 72.5/95.5 | 92.3/121 | 95 | 125 | 82 | 4-16 | HPA052DA/HPA075SR |
| 65 | 2 1/2″ | 44 | 217 | 64 | 172.4/215 | 83/103.5 | 110.7/128 | 114 | 145 | 97 | 8-16 | HPA063DA/HPA083SR |
| 80 | 3″ | 44 | 232 | 73 | 188.3/248.5 | 95.5/108 | 120/136.2 | 126 | 160 | 113 | 8-16 | HPA075DA/HPA092SR |
| 100 | 4″ | 50 | 270 | 88 | 215/248.5 | 103.5/108 | 121/136.2 | 154 | 180 | 139 | 8-16 | HPA083DA/HPA092SR |
| 125 | 5″ | 56 | 292 | 102 | 248.5/277.5 | 108/121.5 | 136.2/154.5 | 180 | 210 | 163 | 8-16 | HPA092DA/HPA105SR |
| 150 | 6″ | 56 | 318 | 115 | 277.5/358.3 | 121.5/142 | 154.5/187.6 | 206 | 240 | 195 | 8-20 | HPA105DA/HPA125SR |
| 200 | 8″ | 60 | 390 | 149 | 358.3/403.6 | 142/151 | 187.6/204.7 | 264 | 295 | 250 | 8-20/12-20 | HPA125DA/HPA140SR |
| 250 | 10″ | 68 | 457 | 184 | 403.6/468.4 | 151/174 | 204.7/230 | 320 | 350/355 | 305 | 12-20/12-24 | HPA140DA/HPA160SR |
| 300 | 12″ | 78 | 518 | 207 | 468.4/523.5 | 174/206 | 230/262 | 370 | 400/410 | 352 | 12-20/12-24 | HPA160DA/HPA190SR |
| 350 | 14″ | 78 | 610 | 247 | 523.5/539 | 206/226 | 262/287.6 | 430 | 460/470 | 405 | 16-20/16-24 | HPA190DA/HPA210SR |
| 400 | 16″ | 102 | 650 | 275 | 539/605.8 | 226/260 | 287.6/319.5 | 480 | 515/525 | 455 | 16-24/16-27 | HPA210DA/HPA240SR |
| 450 | 18″ | 114 | 713 | 307 | 605.8/719 | 260/294 | 319.5/365 | 550 | 565/585 | 515 | 20-24/20-27 | HPA240DA/HPA270SR |
| 500 | 20″ | 127 | 768 | 330 | 605.8/719 | 260/294 | 319.5/365 | 590 | 620/650 | 565 | 20-24/20-30 | HPA240DA/HPA270SR |
| 600 | 24″ | 151 | 919 | 400 | 719/785 | 294/404 | 365/391 | 695 | 725/770 | 674 | 20-27/20-33 | HPA270DA/HPA300SR |
Common Applications
- Water and Wastewater Treatment Plants
- Power Generation and Utility Services
- Chemical and Petrochemical Processing
- HVAC and District Energy Systems
- Marine and Shipbuilding
- Pulp and Paper Production
