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Pneumatic Forged Steel Soft-Seated Ball Valve – Double Acting

Pneumatic Forged Steel Soft-Seated Ball Valve – Double Acting
  • Nominal Diameter: DN40-DN600 (1.5″-24″)
  • Nominal Pressure: PN16-PN250 (150LB-1500LB)
  • Operation: Pneumatic
  • Optional Accessories: Solenoid Valve, Limit Switch, Pressure Reducing Valve
  • Body Material: A105, F11, F22, F304, F316L, N10002, F20, F60, F53, F904L, etc.
  • Design & Manufacture Standard: ANSI B16.34, GB/T 12237, DIN 3357, API 608, etc.
  • Flange Standard: ASME B16.5, JIS B2220, EN1092-1, HG/T 20592, etc.
  • Operating Temperature: -29°C to 580°C
  • Applicable Media: Water, oils, air, natural gas, steam, weak acids, weak alkalis, common chemical solvents, alcohols, ketones and other organic solvents
For technical drawings and 3-D models, click on a part number.

Product details

The pneumatic forged steel soft-seated ball valve adopts an integral forged steel body with high structural strength, no casting porosity, and excellent pressure and temperature resistance. Equipped with a double-acting pneumatic actuator, it is designed for automatic on-off control under high-pressure, high-temperature and high-reliability working conditions.

The soft-seated design achieves bubble-tight zero leakage, widely used for medium shut-off and control in petroleum, chemical, power, natural gas and other severe industrial environments.

Working Principle of Pneumatic Forged Steel Soft-Sealed Ball Valve (Double Acting)
The double-acting pneumatic actuator operates with bidirectional air supply, driving the valve stem and ball core to rotate through a 90° angular stroke. To open the valve, air is supplied to one side; to close the valve, air is supplied in the reverse direction. The entire operation is pneumatically driven, delivering fast opening/closing response, stable performance, and precise positioning.

The valve achieves zero leakage in the fully closed position through the tight contact between the precision-machined ball and the soft seat. With no spring-return mechanism, the double-acting design relies entirely on air pressure to complete both opening and closing actions, making it ideal for high-frequency and continuous automated control applications.

The actuator can be equipped with accessories such as solenoid valves, limit switches, and pressure-reducing valves to enable remote automated control and valve position signal feedback.

Product Specifications

Pneumatic Shut‑off Ball Valve are 0‑90° rotary valves. They utilize pneumatic actuators to convert compressed air into rotary motion, delivering fast and reliable valve opening and closing for industrial process control.
According to specific application requirements, pneumatic ball valves can be equipped with solenoid valves, limit switches, position feedback devices, air filter‑regulators, valve positioners and other pneumatic instrument accessories to realize automatic valve control and remote monitoring functions.
Many factors shall be considered when selecting a pneumatic ball valve, including valve size, pressure rating, operating temperature, process medium, flow rate, body material, seat material, actuator type and control mode.
If you are looking for a qualified manufacturer or supplier of pneumatic ball valves, please contact our technical team and provide your operating conditions. Our valve engineers will recommend suitable pneumatic ball valves, actuators and control accessories based on your specific application requirements. （Unit: mm）

Pneumatic Forged Steel Floating Ball Valve – 150LB-1500LB

NPSDNType/ClassPart NoLDKdYbZ-doWsHsHwHd
1.540ZYDQ641-150LBZYDQ641150XLX165 125 98.4 73 12.7 4-16230 135
250ZYDQ641-150LBZYDQ641150XLX178 150 120.7 92 14.3 4-19260 150
2.565ZYDQ641-150LBZYDQ641150XLX190 180 139.7 105 15.9 4-19350 180
380ZYDQ641-150LBZYDQ641150XLX203 190 152.4 127 17.5 4-19500 195
4100ZYDQ641-150LBZYDQ641150XLX229 230 190.5 157 22.3 8-19650 245 310 420
5125ZYDQ641-150LBZYDQ641150XLX356 255 215.9 186 22.3 8-22.5800 270 330 440
6150ZYDQ641-150LBZYDQ641150XLX394 280 241.3 216 23.9 8-22.51000 295 390 470
8200ZYDQ641-150LBZYDQ641150XLX457 345 298.5 270 27.0 8-22.5440 510
10250ZYDQ641-150LBZYDQ641150XLX533 405 362 324 28.6 12-25.5490 560
12300ZYDQ641-150LBZYDQ641150XLX610 485 4318 381 30.2 12-25.5530 600
14350ZYDQ641-150LBZYDQ641150XLX686 535 476.3 413 33.4 12-28.5620 670
16400ZYDQ641-150LBZYDQ641150XLX762 595 539.8 470 35.0 16-28.5675 720
18450ZYDQ641-150LBZYDQ641150XLX864 635 577.9 533 38.1 16-32740 790
20500ZYDQ641-150LBZYDQ641150XLX914 700 635 584 41.3 20-32825 870
24600ZYDQ641-150LBZYDQ641150XLX1067 815 749.3 692 46.3 20-35920 960
1.540ZYDQ641-300LBZYDQ641300XLX190 155 114.3 73 19.1 4-22.5230 135
250ZYDQ641-300LBZYDQ641300XLX216 165 127 92 20.7 8-19260 150
2.565ZYDQ641-300LBZYDQ641300XLX241 190 149.2 105 23.9 8-22.5350 180
380ZYDQ641-300LBZYDQ641300XLX282 210 168.3 127 27.0 8-22.5500 195
4100ZYDQ641-300LBZYDQ641300XLX305 255 200 157 30.2 8-22.5800 250 320 430
5125ZYDQ641-300LBZYDQ641300XLX356 280 235 186 33.4 8-22.51000 280 340 450
6150ZYDQ641-300LBZYDQ641300XLX403 320 269.9 216 35.0 12-22.51200 300 405 480
8200ZYDQ641-300LBZYDQ641300XLX502 380 330.2 270 39.7 12-25.5450 530
10250ZYDQ641-300LBZYDQ641300XLX568 445 387.4 324 46.1 16-28.5505 590
12300ZYDQ641-300LBZYDQ641300XLX648 520 450.8 381 49.3 16-32545 620
14350ZYDQ641-300LBZYDQ641300XLX762 585 514.4 413 52.4 20-32640 690
16400ZYDQ641-300LBZYDQ641300XLX838 650 571.5 470 55.6 20-35690 740
18450ZYDQ641-300LBZYDQ641300XLX914 710 628.6 533 58.8 24-35760 810
20500ZYDQ641-300LBZYDQ641300XLX991 775 685.8 584 62.0 24-35850 900
1.540ZYDQ641-600LBZYDQ641600XLX241 155 114.3 90 68.263 22.3 4-22.5260 160
250ZYDQ641-600LBZYDQ641600XLX292 165 127 108 82.550 25.4 8-19350 180
2.565ZYDQ641-600LBZYDQ641600XLX330 190 149.2 127 101.600 28.6 8-22.5500 200
380ZYDQ641-600LBZYDQ641600XLX356 210 168.3 146 123.825 31.8 8-22.5800 240 310 410
4100ZYDQ641-600LBZYDQ641600XLX432 275 215.9 175 149225 38.1 8-25.51000 270 340 450
5125ZYDQ641-600LBZYDQ641600XLX508 330 266.7 210 180.975 44.5 8-28.51200 320 360 505
6150ZYDQ641-600LBZYDQ641600XLX559 355 292.1 241 211.138 47.7 12-28.5425 555
8200ZYDQ641-600LBZYDQ641600XLX660 420 349.2 302 269.876 55.6 12-32470 625
10250ZYDQ641-600LBZYDQ641600XLX787 510 431.8 356 323.851 63.5 16-35525 645
12300ZYDQ641-600LBZYDQ641600XLX838 560 489.0 413 381.001 66.7 20-35565 715
14350ZYDQ641-600LBZYDQ641600XLX889 605 527.0 457 419.101 69.9 20-38670 770
16400ZYDQ641-600LBZYDQ641600XLX991 685 603.2 508 469.901 76.2 20-41720 840
18450ZYDQ641-600LBZYDQ641600XLX1092 745 654.0 575 533.401 82.6 20-44.5780 920
20500ZYDQ641-600LBZYDQ641600XLX1194 815 723.9 635 584.201 88.9 24-44.5850 995
1.540ZYDQ641-900LBZYDQ641900XLX305 180 123.8 73 31.8 4-28.5350 160
250ZYDQ641-900LBZYDQ641900XLX368 215 165.1 92 38.1 8-25.5500 180
2.565ZYDQ641-900LBZYDQ641900XLX419 245 190.5 105 41.3 8-28.5800 200
380ZYDQ641-900LBZYDQ641900XLX381 240 190.5 156 123.82 38.1 8-25.51000 240 310 410
4100ZYDQ641-900LBZYDQ641900XLX457 290 235.0 181 149.22 44.5 8-321200 270 340 450
5125ZYDQ641-900LBZYDQ641900XLX559 350 279.4 216 180.98 50.8 8-35360 505
6150ZYDQ641-900LBZYDQ641900XLX610 380 317.5 241 211.12 55.6 12-32425 560
8200ZYDQ641-900LBZYDQ641900XLX737 470 393.7 308 269.88 63.5 12-38530 630
10250ZYDQ641-900LBZYDQ641900XLX838 545 469.9 362 323.85 69.9 16-38570 720
12300ZYDQ641-900LBZYDQ641900XLX965 610 533.4 419 381.00 79.4 20-38680 780
14350ZYDQ641-900LBZYDQ641900XLX1029 640 558.8 467 419.10 85.8 20-41800 905
16400ZYDQ641-900LBZYDQ641900XLX1130 705 616.0 524 469.90 88.9 20-44.5910 1010
1.540ZYDQ641-1500LBZYDQ6411500XLX305 180 123.8 92 68.28 31.8 4-28.5500 180
250ZYDQ641-1500LBZYDQ6411500XLX368 215 165.1 124 95.25 38.1 8-25.5650 200
2.565ZYDQ641-1500LBZYDQ6411500XLX419 245 190.5 137 107.95 41.3 8-28.5800 220
380ZYDQ641-1500LBZYDQ6411500XLX470 265 203.2 168 136.52 47.7 8-321000 260 320 420
4100ZYDQ641-1500LBZYDQ6411500XLX546 310 241.3 194 161.92 54.0 8-351200 290 360 470
5125ZYDQ641-1500LBZYDQ6411500XLX673 375 292.1 229 193.68 73.1 8-41380 530
6150ZYDQ641-1500LBZYDQ6411500XLX705 395 317.5 248 211.12 82.6 12-38440 580
8200ZYDQ641-1500LBZYDQ6411500XLX832 485 393.7 318 269.88 92.1 12-45–550 650

This valve features a dense, integrally forged steel body, offering excellent pressure resistance, high-temperature capability, and impact strength. Combined with a soft-seated design, it achieves zero-leakage shutoff. Driven by a double-acting pneumatic actuator, the valve delivers smooth and rapid switching, supports high-frequency operation, and features a straight-through flow path that provides high flow capacity with minimal pressure drop.

With no spring-return mechanism, the valve offers low failure rates and extended service life. It can be flexibly equipped with various automation accessories to enable remote control and valve position feedback. The valve is highly adaptable to demanding operating conditions, including high temperature, high pressure, and a wide range of clean industrial media.