Our company's D673H\D671X pneumatic butterfly valves are the standard choice for pipeline applications. They are typically categorized into pneumatic butterfly valves with soft seals and pneumatic butterfly valves with hard seals. These pneumatic butterfly valves feature a simple structure, low flow resistance, linear flow characteristics, and no debris retention. They also offer the advantages of being lightweight, easy to install, and requiring low torque to drive. They can be used for both cutting off media and regulating the flow rate of media. The valve body can be fitted with components made from different materials and equipped with seals made from various materials to accommodate different media and operating conditions, optimizing cost and performance. The pneumatic butterfly valves with soft seals are suitable for temperatures up to 120℃ or 150℃. The pneumatic butterfly valves with hard seals are suitable for temperatures of 200℃ or higher and up to 450℃, with nominal pressure up to 1.6MPa. They are used in industries such as water supply and drainage, sewage, food, heating, gas, marine, hydropower, metallurgy, energy systems, and light industry and textiles. They are particularly suitable for applications requiring bidirectional sealing and for valve bodies prone to rust, where they are used to regulate flow rates and cut off media.
Pneumatic Wafer Butterfly Valve - Product Features
Compact and lightweight, easy to disassemble and maintain, and can be installed at any location.
(2) Simple and compact structure, low operating torque, quick 90° rotation to open.
(3) Flow characteristic tends to a straight line, with good regulating performance.
(4) The butterfly plate and valve stem connection utilizes a pinless structure, eliminating potential internal leakage points.
(5) The butterfly plate's outer diameter features a spherical design, enhancing sealing performance and extending the valve's lifespan. It can operate with pressure and still maintain zero leakage after more than 50,000 cycles of opening and closing.
(1) Sealing parts are replaceable and provide reliable double-sealing.
(7) Butterfly plates can be coated with a finish as per customer requirements, such as nylon or polytetrafluoroethylene.
Pneumatic Wafer Butterfly Valve - Technical Parameters
| Nominal Pipe Size (mm) | 50～1200 |
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| Nominal Pressure | PN0.6、1.0、1.6、2.5MPa |
| Connection Type | Clamping type |
| Valve plate style | Vertical Plate |
| Flow characteristics | Approximate Quick-Release Type |
| Action Range | 0～90° |
| Leakage amount | In accordance with GB/T4213-92, for Kv value of 10-4, soft seal: zero leakage |
| Basic Error | With locator: ±2%% less than full travel |
| Return Difference | With locator: ±2% of less than full travel |
| Configuration Actuator | GT, AT, AR, AW Series Double-acting and Single-acting Pneumatic Actuators |
| Control Method | Switch-type (two-position control), Adjust-type (4-20mA control) |
Pneumatic Actuated Butterfly Valve - Actuator Parameters
| Actuator Model | GT, AT, AR, AW Series Double-acting and Single-acting Pneumatic Actuators |
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| Supply Pressure | 0.4～0.7MPa |
| Gas source interface | G1/4"、G1/8"、G3/8"、G1/2" |
| Ambient temperature | -30～+70℃ |
| Function form | Single-acting actuator: Gas-closed (B) -- valve position open (FO) when gas is lost; Gas-open (K) -- valve position closed (FC) when gas is lost
Double-acting actuator: Gas-closed type (B) - valve position maintained (FL) when gas is lost; Gas-open type (K) - valve position maintained (FL) when gas is lost |
| Available accessories | Locators, solenoid valves, air filter regulators, holding valves, limit switches, position transmitters, handwheels, etc. |
Utilizing a new series of pneumatic actuators, featuring double-acting and single-acting (spring return) types, with gear rack drive, ensuring safety and reliability; large-diameter valves are equipped with the AW series pneumatic actuator's fork drive mechanism, which has a rational structure, high output torque, and offers both double-acting and single-acting options.
1. Gear-type double piston, high output torque, compact size.
2. Cylinder made of aluminum alloy material, lightweight and aesthetically pleasing.
3. Manual operation mechanisms can be installed at the top and bottom.
4. Ratchet-type connections allow for adjustable opening angles and rated flow rates.
5. Actuators are available with telegraphic signal feedback indicators and various accessories for automated operation.
6. The IS05211 standard connection facilitates the installation and replacement of the product.
7. The adjustable screws at both ends allow standard products to have a ±4° adjustable range at 0° and 90°, ensuring synchronized precision with the valve.
Pneumatic Wafer Butterfly Valve - Parts Material
| Part Name | Material Name |
|---|
| Valve body | Cast Iron, Cast Steel, Stainless Steel, Chromium-Molybdenum Steel, Alloy Steel |
| Butterfly Plate | Cast Steel, Alloy Steel (Hard Chrome Plated), Stainless Steel, Chromium-Molybdenum Steel |
| Seal ring | Rubber, PTFE, PPL, Stainless Steel, Polylactic Acid, Abrasion-Resistant Materials |
| Valve Stem | 2Cr13 Stainless Steel, 1Cr13 Stainless Steel, Chromium Molybdenum Steel |
| Filling Material | PTFE, Flexible Graphite |
Pneumatic Wafer Butterfly Valve - Performance Specifications
| Nominal Diameter DN (mm) | DN50～1200 |
|---|
| Nominal Pressure | PN(MPa) | 0.6 | 1.0 | 1.6 | 2.5 |
| Test Pressure | Tensile Test | 0.9 | 1.5 | 2.4 | 3.75 |
| Sealing Test | 0.66 | 1.1 | 1.76 | 2.75 |
| Low-pressure Sealing Test | 0.5～0.7 |
| Applicable Medium | Water, oil, steam, nitric acid (temperature ≤ 200℃), acetic acid (temperature ≤ 200℃) |
Pneumatic Wafer Butterfly Valve - Design Standard
| Design Standards | GB/T12238-1989 |
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| Flange Connection Dimensions | GB/T9113.1-2000；GB/T9115.1-2000；JB78 |
| Structural Length | GB/T12221-1989 |
| Pressure Test | GB/T13927-2000；JB/T9092-1999 |
Pneumatic Wafer Butterfly Valve - Connection Size Diagram
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| D673H Pneumatic Hard Seated Wafer Butterfly Valve | D671X Pneumatic Soft Seated Wafer Butterfly Valve |
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Pneumatic Wafer Butterfly Valve - Connection Dimensions
| Nominal Diameter (DN) | Primary Dimensions | Flange Size |
|---|
| D673H/F | D671F/X | A | H1 | 1.0MPa | 1.6MPa | 2.5MPa |
|---|
| L | H | L | H | K | n-Фd | K | n-Фd | K | n-Фd |
|---|
| 50 | 43 | 112 | 43 | 63 | 180 | 315 | 125 | 4-18 | 125 | 4-18 | 125 | 4-18 |
| 65 | 46 | 115 | 46 | 70 | 180 | 330 | 145 | 4-18 | 145 | 4-18 | 145 | 8-18 |
| 80 | 46 | 120 | 46 | 83 | 245 | 390 | 160 | 4-18 | 160 | 8-18 | 160 | 8-18 |
| 100 | 52 | 138 | 52 | 105 | 240 | 431 | 180 | 8-18 | 180 | 8-18 | 190 | 8-22 |
| 125 | 56 | 164 | 56 | 115 | 240 | 455 | 210 | 8-18 | 210 | 8-18 | 220 | 8-26 |
| 150 | 56 | 175 | 56 | 137 | 350 | 626 | 240 | 8-22 | 240 | 8-22 | 250 | 8-26 |
| 200 | 60 | 200 | 60 | 164 | 350 | 720 | 295 | 8-22 | 295 | 12-22 | 310 | 12-26 |
| 250 | 68 | 243 | 68 | 206 | 550 | 800 | 350 | 12-22 | 355 | 12-26 | 370 | 12-30 |
| 300 | 78 | 250 | 78 | 230 | 600 | 860 | 400 | 12-22 | 410 | 12-26 | 430 | 16-30 |
| 350 | 78 | 280 | 78 | 248 | 600 | 883 | 460 | 16-22 | 470 | 12-26 | 490 | 16-33 |
| 400 | 102 | 305 | 102 | 289 | 600 | 972 | 515 | 16-26 | 525 | 16-26 | 550 | 16-36 |
| 450 | 114 | 350 | 114 | 320 | 750 | 1043 | 565 | 20-26 | 585 | 16-30 | 600 | 20-36 |
| 500 | 127 | 380 | 127 | 343 | 750 | 1098 | 620 | 20-26 | 650 | 20-30 | 660 | 20-36 |
| 600 | 154 | 445 | 154 | 413 | 750 | 1236 | 725 | 20-30 | 770 | 20-33 | 770 | 20-39 |
| 700 | 165 | 480 | 165 | 478 | 750 | 1431 | 840 | 24-30 | 840 | 24-36 | 875 | 24-42 |
| 800 | 190 | 530 | 190 | 525 | 750 | 1488 | 950 | 24-33 | 950 | 24-39 | 990 | 24-48 |
| 900 | 203 | 580 | 203 | 585 | 1250 | 1615 | 1050 | 28-33 | 1050 | 28-39 | 1090 | 28-48 |
| 1000 | 216 | 650 | 216 | 640 | 1500 | 1765 | 1160 | 28-36 | 1170 | 28-42 | 1210 | 28-56 |
| 1200 | 254 | 760 | 254 | 755 | 1500 | 1976 | 1380 | 32-39 | 1390 | 32-48 | 1420 | 32-56 |
Pneumatic Wafer Butterfly Valve - Product Selection
(1) Valve Body Parameters: Nominal Bore Size, Working Pressure, Process Medium, Application, Valve Body Material, and a series of other parameters.
(2) Actuator Parameters: Actuator Type, Control Method, Control Signal (4-20mA, 1-5V), Operating Mode (Air-Open, Air-Close)
Please provide as much detail as possible regarding the above technical specifications to facilitate our production and technical staff in accurately selecting the right product for you. Should you have any questions, feel free to call us, and we will certainly strive to provide you with excellent service!
Related Names: Pneumatic Wafer Butterfly Valve, D673H Pneumatic Hard Seated Wafer Butterfly Valve, D671X Pneumatic Soft Seated Wafer Butterfly Valve
