Custom Pneumatic operation wafer butterfly valve double acting Supplier, Suppliers
Product Description
Pneumatic butterfly valves are powered by compressed air. As compressed air enters the pneumatic actuator, it drives internal components such as pistons or rack and pinion mechanisms to move, which in turn rotates the valve stem and butterfly disc to open or close the valve. The integration of a valve positioner enables precise control over the butterfly disc’s rotation angle, allowing for accurate regulation of pipeline media parameters including flow rate and pressure.
1. Flexible Operation
Pneumatic actuators respond quickly, can achieve rapid opening and closing, and can be integrated with automation systems for remote control.
2. Low Flow Resistance
When the butterfly plate is opened, the effective flow area is large, and the resistance when the medium flows through is small, which is conducive to energy conservation.
3. Wide Material Selection
Suitable valve body and seal materials can be selected according to the characteristics of different media to meet requirements such as corrosion resistance and temperature resistance.
The pneumatic wafer butterfly valves have a broad application scope spanning municipal engineering, industrial manufacturing, and public utility systems. Primarily designed for the on-off control and flow regulation of fluid media, they are particularly well suited for applications with space constraints and automated operation requirements.
Standard export wooden case packaging
| Body | Disc | Stem | Bushing | Seat | |||||
| Name | Code | Name | Code | Name | Name | Name | Code | ℃ Working temp | |
| Cast iron | Z | Plated ductile iron | B1 | Stainless steel | Lubrized bronze | NR | X1 | -20~+85℃ | |
| Ductile iron | Q | Aluminum bronze | B2 | Hypalon | X2 | -23~+121℃ | |||
| Aluminum bronze | T | ZG1Cr18Ni9Ti Stainless steel | B3 | EPDM | X3 | -23~+121℃ | |||
| ZG1Cr13Ni9Ti Stainless steel | P | Titanium steel | B4 | Neoprene | X4 | -7~+93℃ | |||
| CF8M Stainless steel | R | CF8M Stainless steel | B5 | NBR | X5 | -23~+100℃ | |||
| Carbon steel | C | Carbon steel | B6 | Wear-resistant rubber | X6 | -10~+100℃ | |||
| CF8 Stainless steel | CF8 Stainless steel | B7 | VITON | X7 | -23~+200℃ | ||||
| Hear-resistant rubber | X9 | -23~+135℃ | |||||||
| PTFE | F4 | +10~+150℃ | |||||||
| DN | A | B | C | D | L | H | D1 | n- φ | K | E | n1- φ 1 | φ 2 | G | n2-M | |
| mm | inch | ||||||||||||||
| 50 | 2” | 161 | 80 | 42 | 52.9 | 32 | 84.84 | 120 | 4- φ 23 | 77 | 57.15 | 4- φ 6.7 | 12.6 | 118 | - |
| 65 | 2.5" | 175 | 89 | 44.7 | 64.5 | 32 | 96.2 | 136.2 | 4- φ 26.5 | 77 | 57.15 | 4- φ 6.7 | 12.6 | 137 | - |
| 80 | 3” | 181 | 95 | 45.2 | 78.8 | 32 | 61.23 | 160 | 8- φ 18 | 77 | 57.15 | 4- φ 6.7 | 12.6 | 143 | - |
| 100 | 4” | 200 | 114 | 52.1 | 104 | 32 | 70.80 | 185 | 4- φ 24.5 | 92 | 69.85 | 4- φ 10.3 | 15.77 | 156 | - |
| 125 | 5" | 213 | 127 | 54.4 | 123.3 | 32 | 82.28 | 215 | 4- φ 23 | 92 | 69.85 | 4- φ 10.3 | 18.92 | 190 | - |
| 150 | 6" | 226 | 139 | 55.8 | 155.6 | 32 | 91.08 | 238 | 4- φ 25 | 92 | 69.85 | 4- φ 10.3 | 18.92 | 212 | - |
| 200 | 8" | 260 | 175 | 60.6 | 202.5 | 45 | 112.89 76.35 | 295 | 4- φ 25 4- φ 23 | 115 | 88.9 | 4- φ 14.3 | 22.1 | 268 | - |
| 250 | 10" | 292 | 203 | 65.6 | 250.5 | 45 | 92.40 | 357 | 4- φ 29 | 115 | 88.9 | 4- φ 14.3 | 28.45 | 325 | - |
| 300 | 12" | 337 | 242 | 76.9 | 301.6 | 45 | 105.34 | 407 | 4- φ 29 | 140 | 107.95 | 4- φ 14.3 | 31.6 | 403 | - |
| 350 | 14" | 368 | 267 | 76.5 | 333.3 | 45 | 91.11 | 467 | 4- φ 30 | 140 | 107.95 | 4- φ 14.3 | 31.6 | 436 | - |
| 400 | 16’ | 400 | 309 | 86.5 | 389.6 | 51.2 72 | 100.47 102.42 | 515 525 | 4- φ 26 4- φ 30 | 197 | 158.75 | 4- φ 20.6 | 33.15 | 488 | - |
| 450 | 18" | 422 | 328 | 105.6 | 440.51 | 51.2 72 | 88.39 91.51 | 565 585 | 4- φ 26 4- φ 30 | 197 | 158.75 | 4- φ 20.6 | 38 | 539 | - |
| 500 | 20" | 480 | 361 | 131.8 | 491.6 | 64.2 82 | 95.99 101.68 | 620 650 | 4- φ 26 4- φ 33 | 197 | 158.75 | 4- φ 20.6 | 41.15 | 593 | - |
| 600 | 24" | 562 | 459 | 152 | 592.5 | 70.2 82 | 113.42 120.46 | 725 770 | 20- φ 30 20- φ 36 | 276 | 215.9 | 4- φ 22.2 | 50.65 | 816 | - |
| 700 | 28" | 624 | 520 | 163 | 695 | 66 82 | 109.65 840 | 840 | 24- φ 30 20- φ 36 | 300 | 254 | 8- φ 18 | 55 63.35 | 895 | 4-M33 |
| 800 | 32" | 672 | 591 | 188 | 794.7 | 66 82 | 124 950 | 950 | 24- φ 33 24- φ 39 | 300 | 254 | 8- φ 18 | 55 63.35 | 1015 | - |
| 900 | 36" | 720 | 656 | 203 | 864.7 | 118 | 117.57 | 1050 | 24- φ 33 | 300 | 254 | 8- φ 18 | 75 | 1115 | 4-M30 |
| 1000 | 40" | 800 | 721 | 216 | 965 | 142 | 129.89 | 1160 | 24- φ 36 | 300 | 254 | 8- φ 18 | 85 | 1230 | 4-M33 |
The valve is designed and manufactured according to the EN593 standard and features high-precision investment casting workmanship.
The general working temperature range is -20°C < T < 120°C. Depending on the seat material selected (such as VITON, EPDM, or PTFE), it can handle up to +200°C.
Yes, it features bidirectional sealing with a zero leakage sealing grade, making it suitable for strict fluid isolation requirements.
Compressed air drives internal pistons or rack and pinion mechanisms in the actuator, which rotates the valve stem and disc. With a valve positioner, precise control of flow and pressure is achieved.
Available body options include Cast Iron, Ductile Iron, Aluminum Bronze, Stainless Steel (CF8/CF8M/ZG1Cr13Ni9Ti), and Carbon Steel.
Products are securely packaged in standard export wooden cases to protect against damage during international transit.
