The single-acting pneumatic forged steel fixed high-pressure ball valve with handwheel consists of a single-acting pneumatic actuator, manual operating mechanism and forged steel fixed high-pressure ball valve. The valve body adopts an integral forging process with dense metallurgical structure to withstand high-pressure service conditions.
Designed with a fixed ball and self-seating valve seats, it delivers reliable sealing performance. Fitted with a spring return single-acting actuator for fail-safe protection upon loss of air supply, and integrated with a handwheel mechanism for manual emergency operation during air supply failure or commissioning. It is widely used for safety shut-off and automatic control in high-pressure process pipelines of petroleum, chemical, natural gas and other industries.
Working Principle of Pneumatic Forged Steel Trunnion-Mounted High Pressure Ball Valve with Manual Gearbox – Single Acting
The single-acting pneumatic actuator is fitted with an internal spring return assembly. When supplied with compressed air, the piston moves against spring force, rotating the valve stem and fixed ball by 90° via scotch yoke or rack-and-pinion mechanism to open or close the valve. Once air supply is interrupted or pressure relieved, the spring releases stored energy to automatically reset the valve to its fail-safe position.
The fixed ball is supported by upper and lower stems, with medium pressure borne by bearings to reduce load on valve seats. The integrated handwheel allows manual valve operation for maintenance and emergency shut-off in case of air supply failure. It can be fitted with solenoid valves, limit switches, pressure reducing valves to realize remote control and valve position feedback.
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）
| DN | NPS | Type/Class | Part No | L1 | D | K | Th | n-L | C | d1 | f | P | E | F | d | w | X | y | Z |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 50 | 2 | ZYDQ647-150LB | ZYDQ647150XLX2 | 178 | 150 | 120.7 | M16 | 46130 | 17.5 | 91.9 | 1.5 | 82.55 | 6.35 | 8.74 | |||||
| 65 | 2.5 | ZYDQ647-150LB | ZYDQ647150XLX2.5 | 190 | 180 | 139.7 | M16 | 4-18 | 20.7 | 104.6 | 1.5 | 101.6 | 6.35 | 8.74 | |||||
| 80 | 3 | ZYDQ647-150LB | ZYDQ647150XLX3 | 203 | 190 | 152.4 | M16 | 4-18 | 22.3 | 127 | 1.5 | 114.3 | 6.35 | 8.74 | |||||
| 100 | 4 | ZYDQ647-150LB | ZYDQ647150XLX4 | 229 | 230 | 190.5 | M16 | 8-18 | 22.3 | 157.2 | 1.5 | 149.23 | 6.35 | 8.74 | |||||
| 150 | 6 | ZYDQ647-150LB | ZYDQ647150XLX6 | 394 | 280 | 241.3 | M20 | 8-22 | 23.9 | 215.9 | 1.5 | 193.68 | 6.35 | 8.74 | |||||
| 200 | 8 | ZYDQ647-150LB | ZYDQ647150XLX8 | 457 | 345 | 298.58 | M20 | 8-22 | 27.0 | 269.7 | 1.5 | 247.65 | 6.35 | 8.74 | |||||
| 250 | 10 | ZYDQ647-150LB | ZYDQ647150XLX10 | 533 | 405 | 362.0 | M24 | 12-26 | 28.6 | 323.8 | 1.5 | 304.8 | 6.35 | 8.74 | |||||
| 300 | 12 | ZYDQ647-150LB | ZYDQ647150XLX12 | 610 | 485 | 431.8 | M24 | 12-26 | 30.2 | 381 | 1.5 | 381 | 6.35 | 8.74 | |||||
| 350 | 14 | ZYDQ647-150LB | ZYDQ647150XLX14 | 686 | 535 | 476.2 | M27 | 12-30 | 33.4 | 412.8 | 1.5 | 396.88 | 6.35 | 8.74 | |||||
| 400 | 16 | ZYDQ647-150LB | ZYDQ647150XLX16 | 762 | 595 | 539.8 | M27 | 16-30 | 35.0 | 469.9 | 1.5 | 454.03 | 6.35 | 8.74 | |||||
| 450 | 18 | ZYDQ647-150LB | ZYDQ647150XLX18 | 864 | 635 | 577.9 | M30 | 16-33 | 38.1 | 533.4 | 1.5 | 517.53 | 6.35 | 8.74 | |||||
| 500 | 20 | ZYDQ647-150LB | ZYDQ647150XLX20 | 914 | 700 | 635.0 | M30 | 20-33 | 41.3 | 584.2 | 1.5 | 558.8 | 6.35 | 8.74 | |||||
| 600 | 24 | ZYDQ647-150LB | ZYDQ647150XLX24 | 1067 | 815 | 749.3 | M33 | 20-36 | 46.1 | 692.2 | 1.5 | 673.1 | 6.35 | 8.74 | |||||
| 650 | 26 | ZYDQ647-150LB | ZYDQ647150XLX26 | 1143 | 870 | 806.4 | M33 | 24-36 | 66.7 | ||||||||||
| 700 | 28 | ZYDQ647-150LB | ZYDQ647150XLX28 | 1245 | 925 | 863.6 | M33 | 28-36 | 69.9 | ||||||||||
| 750 | 30 | ZYDQ647-150LB | ZYDQ647150XLX30 | 1295 | 985 | 914.4 | M33 | 28-36 | 73.1 | ||||||||||
| 800 | 32 | ZYDQ647-150LB | ZYDQ647150XLX32 | 1372 | 1060 | 977.9 | M39 | 28-42 | 79.4 | ||||||||||
| 850 | 34 | ZYDQ647-150LB | ZYDQ647150XLX34 | 1473 | 1110 | 1028.7 | M39 | 32-42 | 81.0 | ||||||||||
| 900 | 36 | ZYDQ647-150LB | ZYDQ647150XLX36 | 1524 | 1170 | 1085.8 | M39 | 32-42 | 88.9 | ||||||||||
| 1000 | 40 | ZYDQ647-150LB | ZYDQ647150XLX40 | 1753 | 1290 | 1200.2 | M39 | 36-42 | 88.9 | ||||||||||
| 1050 | 42 | ZYDQ647-150LB | ZYDQ647150XLX42 | 1855 | 1345 | 1257.3 | M39 | 36-42 | 95.3 | ||||||||||
| 1200 | 48 | ZYDQ647-150LB | ZYDQ647150XLX48 | 2134 | 1510 | 1422.4 | M39 | 44-42 | 106.4 | ||||||||||
| 50 | 2 | ZYDQ647-300LB | ZYDQ647300XLX2 | 216 | 165 | 127.0 | M16 | 8-18 | 20.7 | 91.9 | 1.5 | 82.55 | 7.92 | 11.91 | 103 | 73 | 92.1 | 93.7 | 71.4 |
| 65 | 2.5 | ZYDQ647-300LB | ZYDQ647300XLX2.5 | 241 | 190 | 149.2 | M20 | 8-22 | 23.9 | 104.6 | 1.5 | 101.6 | 7.92 | 11.91 | 116 | 85.7 | 104.8 | 106.4 | 84.1 |
| 80 | 3 | ZYDQ647-300LB | ZYDQ647300XLX3 | 282 | 210 | 168.3 | M20 | 8-22 | 27.0 | 127 | 1.5 | 123.83 | 7.92 | 11.91 | 138 | 108 | 127 | 128.6 | 106.4 |
| 100 | 4 | ZYDQ647-300LB | ZYDQ647300XLX4 | 305 | 255 | 200.0 | M20 | 8-22 | 30.2 | 157.2 | 1.5 | 149.23 | 7.92 | 11.91 | 168 | 131.8 | 157.2 | 158.8 | 130.2 |
| 150 | 6 | ZYDQ647-300LB | ZYDQ647300XLX6 | 457 | 320 | 269.9 | M20 | 12-22 | 35.0 | 215.9 | 1.5 | 211.12 | 7.92 | 11.91 | 227 | 190.5 | 215.9 | 217.5 | 188.9 |
| 200 | 8 | ZYDQ647-300LB | ZYDQ647300XLX8 | 502 | 380 | 330.2 | M24 | 12-26 | 39.7 | 269.7 | 1.5 | 269.88 | 7.92 | 11.91 | 281 | 238.1 | 269.9 | 271.5 | 236.5 |
| 250 | 10 | ZYDQ647-300LB | ZYDQ647300XLX10 | 568 | 445 | 387.4 | M27 | 16-30 | 46.1 | 323.8 | 1.5 | 323.85 | 7.92 | 11.91 | 335 | 285.8 | 323.8 | 325.4 | 284.2 |
| 300 | 12 | ZYDQ647-300LB | ZYDQ647300XLX12 | 648 | 520 | 450.8 | M30 | 16-33 | 49.3 | 381 | 1.5 | 381 | 7.92 | 11.91 | 392 | 342.9 | 381 | 382.6 | 341.3 |
| 350 | 14 | ZYDQ647-300LB | ZYDQ647300XLX14 | 762 | 585 | 514.4 | M30 | 20-33 | 52.4 | 412.8 | 1.5 | 419.1 | 7.92 | 11.91 | 424 | 374.6 | 412.8 | 414.3 | 373.1 |
| 400 | 16 | ZYDQ647-300LB | ZYDQ647300XLX16 | 838 | 650 | 571.5 | M33 | 20-36 | 55.6 | 469.9 | 1.5 | 469.9 | 7.92 | 11.91 | 481 | 425.4 | 469.9 | 471.5 | 423..9 |
| 450 | 18 | ZYDQ647-300LB | ZYDQ647300XLX18 | 914 | 710 | 628.6 | M33 | 24-36 | 58.8 | 533.4 | 1.5 | 533.4 | 7.92 | 11.91 | 544 | 489 | 533.4 | 535 | 487.4 |
| 500 | 20 | ZYDQ647-300LB | ZYDQ647300XLX20 | 991 | 775 | 685.8 | M33 | 24-36 | 62.0 | 584.2 | 1.5 | 584.2 | 9.53 | 13.49 | 595 | 533.4 | 584.2 | 585.8 | 531.8 |
| 600 | 24 | ZYDQ647-300LB | ZYDQ647300XLX24 | 1143 | 915 | 812.8 | M39×3 | 24-42 | 68.3 | 692.2 | 1.5 | 692.15 | 11.13 | 16.66 | 703 | 641.4 | 692.2 | 693.7 | 639.8 |
| 650 | 26 | ZYDQ647-300LB | ZYDQ647300XLX26 | 1245 | 970 | 876.3 | M42 | 28-45 | 77.8 | ||||||||||
| 700 | 28 | ZYDQ647-300LB | ZYDQ647300XLX28 | 1346 | 1035 | 939.8 | M42 | 28-45 | 84.2 | ||||||||||
| 750 | 30 | ZYDQ647-300LB | ZYDQ647300XLX30 | 1397 | 1090 | 997.0 | M45 | 28-48 | 90.5 | ||||||||||
| 800 | 32 | ZYDQ647-300LB | ZYDQ647300XLX32 | 1524 | 1150 | 1054.1 | M48 | 28-51 | 96.9 | ||||||||||
| 850 | 34 | ZYDQ647-300LB | ZYDQ647300XLX34 | 1626 | 1205 | 1104.9 | M48 | 28-51 | 100.1 | ||||||||||
| 900 | 36 | ZYDQ647-300LB | ZYDQ647300XLX36 | 1727 | 1270 | 1168.4 | M52 | 32-55 | 103.2 | ||||||||||
| 1000 | 40 | ZYDQ647-300LB | ZYDQ647300XLX40 | 1956 | 1240 | 1155.7 | M42 | 32-45 | 112.8 | ||||||||||
| 1050 | 42 | ZYDQ647-300LB | ZYDQ647300XLX42 | 2083 | 1290 | 1206.5 | M42 | 32-45 | 117.5 | ||||||||||
| 1200 | 48 | ZYDQ647-300LB | ZYDQ647300XLX48 | 2170 | 1465 | 1371.6 | M48 | 32-51 | 131.8 | ||||||||||
| 50 | 2 | ZYDQ647-600LB | ZYDQ647600XLX2 | 292 | 165 | 127.0 | M16 | 8-18 | 25.4 | 91.9 | 6.4 | 82.55 | 7.92 | 11.91 | 103 | 73 | 92.1 | 93.7 | 71.4 |
| 65 | 2.5 | ZYDQ647-600LB | ZYDQ647600XLX2.5 | 330 | 190 | 169.2 | M20 | 8-22 | 28.6 | 104.6 | 6.4 | 101.6 | 7.92 | 11.91 | 116 | 85.7 | 104.8 | 106.4 | 84.1 |
| 80 | 3 | ZYDQ647-600LB | ZYDQ647600XLX3 | 356 | 210 | 168.3 | M20 | 8-22 | 31.8 | 127 | 6.4 | 123.83 | 7.92 | 11.91 | 138 | 108 | 127 | 128.6 | 106.4 |
| 100 | 4 | ZYDQ647-600LB | ZYDQ647600XLX4 | 432 | 275 | 215.9 | M24 | 8-26 | 38.1 | 157.2 | 6.4 | 149.23 | 7.92 | 11.91 | 168 | 131.8 | 157.2 | 158.8 | 130.2 |
| 150 | 6 | ZYDQ647-600LB | ZYDQ647600XLX6 | 559 | 355 | 292 | M27 | 12-30 | 48 | 215.9 | 6.4 | 211.12 | 7.92 | 11.91 | 227 | 190.5 | 215.9 | 217.5 | 188.9 |
| 200 | 8 | ZYDQ647-600LB | ZYDQ647600XLX8 | 660 | 420 | 349 | M30 | 12-33 | 56 | 269.7 | 6.4 | 269.88 | 7.92 | 11.91 | 281 | 238.1 | 269.9 | 271.5 | 236.5 |
| 250 | 10 | ZYDQ647-600LB | ZYDQ647600XLX10 | 787 | 510 | 431 | M33 | 16-36 | 64 | 323.8 | 6.4 | 323.85 | 7.92 | 11.91 | 335 | 285.8 | 323.8 | 325.4 | 284.2 |
| 300 | 12 | ZYDQ647-600LB | ZYDQ647600XLX12 | 838 | 560 | 489 | M33 | 20-36 | 67 | 381 | 6.4 | 381 | 7.92 | 11.91 | 392 | 342.9 | 381 | 382.6 | 341.3 |
| 350 | 14 | ZYDQ647-600LB | ZYDQ647600XLX14 | 889 | 605 | 527 | M36X3 | 20-39 | 70 | 412.8 | 6.4 | 419.1 | 7.92 | 11.91 | 424 | 374.6 | 412.8 | 414.3 | 373.1 |
| 400 | 16 | ZYDQ647-600LB | ZYDQ647600XLX16 | 991 | 685 | 603 | M39X3 | 20-42 | 76 | 469.9 | 6.4 | 469.9 | 7.92 | 11.91 | 481 | 425.4 | 469.9 | 471.5 | 423..9 |
| 450 | 18 | ZYDQ647-600LB | ZYDQ647600XLX18 | 1092 | 745 | 654 | M42X3 | 20-45 | 83 | 533.4 | 6.4 | 533.4 | 7.92 | 11.91 | 544 | 489 | 533.4 | 535 | 487.4 |
| 500 | 20 | ZYDQ647-600LB | ZYDQ647600XLX20 | 1194 | 815 | 724 | M42X3 | 24-45 | 89 | 584.2 | 6.4 | 584.2 | 9.53 | 13.49 | 595 | 533.4 | 584.2 | 585.8 | 531.8 |
| 600 | 24 | ZYDQ647-600LB | ZYDQ647600XLX24 | 1397 | 940 | 838 | M48X3 | 24-51 | 102 | 692.2 | 6.4 | 692.15 | 11.13 | 16.66 | 703 | 641.4 | 692.2 | 693.7 | 639.8 |
| 650 | 26 | ZYDQ647-600LB | ZYDQ647600XLX26 | 1448 | 1015 | 914 | M48 | 28-51 | 108 | ||||||||||
| 700 | 28 | ZYDQ647-600LB | ZYDQ647600XLX28 | 1549 | 1075 | 965 | M52 | 28-55 | 111 | ||||||||||
| 750 | 30 | ZYDQ647-600LB | ZYDQ647600XLX30 | 1651 | 1130 | 1022 | M52 | 28-55 | 114 | ||||||||||
| 800 | 32 | ZYDQ647-600LB | ZYDQ647600XLX32 | 1778 | 1195 | 1080 | M56 | 28-60 | 118 | ||||||||||
| 850 | 34 | ZYDQ647-600LB | ZYDQ647600XLX34 | 1930 | 1245 | 1130 | M56 | 28-60 | 121 | ||||||||||
| 900 | 36 | ZYDQ647-600LB | ZYDQ647600XLX36 | 2083 | 1315 | 1194 | M64 | 28-68 | 124 | ||||||||||
| 50 | 2 | ZYDQ647-900LB | ZYDQ647900XLX2 | 368 | 215 | 165.1 | M24 | 8-26 | 38.1 | 91.9 | 6.4 | 95.25 | 7.92 | 11.91 | 103 | 73 | 92.1 | 93.7 | 71.4 |
| 65 | 2.5 | ZYDQ647-900LB | ZYDQ647900XLX2.5 | 419 | 245 | 190.5 | M27 | 8-30 | 41.3 | 104.6 | 6.4 | 107.95 | 7.92 | 11.91 | 116 | 85.7 | 104.8 | 106.4 | 84.1 |
| 80 | 3 | ZYDQ647-900LB | ZYDQ647900XLX3 | 381 | 240 | 190.5 | M24 | 8-26 | 38.1 | 127 | 6.4 | 123.83 | 7.92 | 11.91 | 138 | 108 | 127 | 128.6 | 106.4 |
| 100 | 4 | ZYDQ647-900LB | ZYDQ647900XLX4 | 457 | 290 | 235 | M30 | 8-33 | 44.5 | 157.2 | 6.4 | 149.23 | 7.92 | 11.91 | 168 | 131.8 | 157.2 | 158.8 | 130.2 |
| 150 | 6 | ZYDQ647-900LB | ZYDQ647900XLX6 | 610 | 380 | 317.5 | M30 | 12-33 | 55.6 | 215.9 | 6.4 | 211.12 | 7.92 | 11.91 | 227 | 190.5 | 215.9 | 217.5 | 188.9 |
| 200 | 8 | ZYDQ647-900LB | ZYDQ647900XLX8 | 737 | 470 | 393.7 | M36x3 | 12-39 | 63.5 | 269.7 | 6.4 | 269.88 | 7.92 | 11.91 | 281 | 238.1 | 269.9 | 271.5 | 236.5 |
| 250 | 10 | ZYDQ647-900LB | ZYDQ647900XLX10 | 838 | 545 | 469.9 | M36x3 | 16-39 | 69.9 | 323.8 | 6.4 | 323.85 | 7.92 | 11.91 | 335 | 285.8 | 323.8 | 325.4 | 284.2 |
| 300 | 12 | ZYDQ647-900LB | ZYDQ647900XLX12 | 965 | 610 | 533.4 | M36x3 | 20-39 | 79.4 | 381 | 6.4 | 381 | 7.92 | 11.91 | 392 | 342.9 | 381 | 382.6 | 341.3 |
| 350 | 14 | ZYDQ647-900LB | ZYDQ647900XLX14 | 1029 | 640 | 558.8 | M39x3 | 20-42 | 85.8 | 412.8 | 6.4 | 419.1 | 11.13 | 16.66 | 424 | 374.6 | 412.8 | 414.3 | 373.1 |
| 400 | 16 | ZYDQ647-900LB | ZYDQ647900XLX16 | 1130 | 705 | 616 | M42x3 | 20-45 | 88.9 | 469.9 | 6.4 | 469.9 | 11.13 | 16.66 | 481 | 425.4 | 469.9 | 471.5 | 423..9 |
| 450 | 18 | ZYDQ647-900LB | ZYDQ647900XLX18 | 1219 | 785 | 685.8 | M48x3 | 20-51 | 101.6 | 533.4 | 6.4 | 533.4 | 12.7 | 19.84 | 544 | 489 | 533.4 | 535 | 487.4 |
| 500 | 20 | ZYDQ647-900LB | ZYDQ647900XLX20 | 1321 | 855 | 749.3 | M52x3 | 20-55 | 108.0 | 584.2 | 6.4 | 584.2 | 12.7 | 19.84 | 595 | 533.4 | 584.2 | 585.8 | 531.8 |
| 600 | 24 | ZYDQ647-900LB | ZYDQ647900XLX24 | 1549 | 1040 | 901.7 | M64x3 | 20-68 | 139.7 | 692.2 | 6.4 | 692.15 | 15.88 | 26.97 | 703 | 641.4 | 692.2 | 693.7 | 639.8 |
| 650 | 26 | ZYDQ647-900LB | ZYDQ647900XLX26 | 1651 | 1085 | 952.5 | M70 | 20-74 | 139.7 | ||||||||||
| 700 | 28 | ZYDQ647-900LB | ZYDQ647900XLX28 | 1753 | 1170 | 1022.4 | M76 | 20-80 | 142.9 | ||||||||||
| 750 | 30 | ZYDQ647-900LB | ZYDQ647900XLX30 | 1880 | 1230 | 1085.9 | M76 | 20-80 | 149.3 | ||||||||||
| 800 | 32 | ZYDQ647-900LB | ZYDQ647900XLX32 | 2032 | 1315 | 1155.7 | M82 | 20-86 | 158.8 | ||||||||||
| 850 | 34 | ZYDQ647-900LB | ZYDQ647900XLX34 | 2159 | 1395 | 1225.6 | M90 | 20-94 | 165.1 | ||||||||||
| 900 | 36 | ZYDQ647-900LB | ZYDQ647900XLX36 | 2286 | 1460 | 1289.1 | M90 | 20-94 | 171.5 | ||||||||||
| 50 | 2 | ZYDQ647-1500LB | ZYDQ6471500XLX2 | 368 | 215 | 165.1 | M24 | 8-26 | 38.1 | 91.9 | 6.4 | 95.25 | 7.92 | 11.91 | 103 | 73 | 92.1 | 93.7 | 71.4 |
| 65 | 2.5 | ZYDQ647-1500LB | ZYDQ6471500XLX2.5 | 419 | 245 | 190.5 | M27 | 8-30 | 41.3 | 104.6 | 6.4 | 107.95 | 7.92 | 11.91 | 116 | 85.7 | 104.8 | 106.4 | 84.1 |
| 80 | 3 | ZYDQ647-1500LB | ZYDQ6471500XLX3 | 470 | 265 | 203.2 | M30 | 8-33 | 47.7 | 127 | 6.4 | 136.53 | 7.92 | 11.91 | 138 | 108 | 127 | 128.6 | 106.4 |
| 100 | 4 | ZYDQ647-1500LB | ZYDQ6471500XLX4 | 546 | 310 | 241.3 | M33 | 8-36 | 54.0 | 157.2 | 6.4 | 161.93 | 7.92 | 11.91 | 168 | 131.8 | 157.2 | 158.8 | 130.2 |
| 150 | 6 | ZYDQ647-1500LB | ZYDQ6471500XLX6 | 705 | 395 | 317.5 | M36x3 | 12-39 | 82.6 | 215.9 | 6.4 | 211.14 | 9.53 | 13.49 | 227 | 190.5 | 215.9 | 217.5 | 188.9 |
| 200 | 8 | ZYDQ647-1500LB | ZYDQ6471500XLX8 | 832 | 485 | 393.7 | M42x3 | 12-45 | 92.1 | 269.7 | 6.4 | 269.88 | 11.13 | 16.66 | 281 | 238.1 | 269.9 | 271.5 | 236.5 |
| 250 | 10 | ZYDQ647-1500LB | ZYDQ6471500XLX10 | 991 | 585 | 482.6 | M48x3 | 12-51 | 108.0 | 323.8 | 6.4 | 323.85 | 11.13 | 16.66 | 335 | 285.8 | 323.8 | 325.4 | 284.2 |
| 300 | 12 | ZYDQ647-1500LB | ZYDQ6471500XLX12 | 1130 | 675 | 571.5 | M52x3 | 16-55 | 123.9 | 381 | 6.4 | 381 | 14.27 | 23.01 | 392 | 342.9 | 381 | 382.6 | 341.3 |
| 350 | 14 | ZYDQ647-1500LB | ZYDQ6471500XLX14 | 1257 | 750 | 635.0 | M56x3 | 16-60 | 133.4 | 412.8 | 6.4 | 419.1 | 15.88 | 26.97 | 424 | 374.6 | 412.8 | 414.3 | 373.1 |
| 400 | 16 | ZYDQ647-1500LB | ZYDQ6471500XLX16 | 1384 | 825 | 704.8 | M64x3 | 16-68 | 146.1 | 469.9 | 6.4 | 469.9 | 17.48 | 30.18 | 481 | 425.4 | 469.9 | 471.5 | 423..9 |
| 450 | 18 | ZYDQ647-1500LB | ZYDQ6471500XLX18 | 1537 | 915 | 774.7 | M70x3 | 16-74 | 162.0 | 533.4 | 6.4 | 533.4 | 17.48 | 30.18 | 544 | 489 | 533.4 | 535 | 487.4 |
| 500 | 20 | ZYDQ647-1500LB | ZYDQ6471500XLX20 | 1664 | 985 | 831.8 | M76x3 | 16-80 | 177.8 | 584.2 | 6.4 | 584.2 | 17.48 | 33.32 | 595 | 533.4 | 584.2 | 585.8 | 531.8 |
| 600 | 24 | ZYDQ647-1500LB | ZYDQ6471500XLX24 | 1943 | 1170 | 990.6 | M90x3 | 16-94 | 203.2 | 692.2 | 6.4 | 692.15 | 20.62 | 36.53 | 703 | 641.4 | 692.2 | 693.7 | 639.8 |
| 50 | 2 | ZYDQ647-2500LB | ZYDQ6472500XLX2 | 451 | 235 | 171.4 | M27 | 8-30 | 50.9 | 91.9 | 6.4 | 101.6 | 7.92 | 11.91 | 103 | 73 | 92.1 | 93.7 | 71.4 |
| 65 | 2.5 | ZYDQ647-2500LB | ZYDQ6472500XLX2.5 | 508 | 265 | 196.8 | M30 | 8-33 | 57.2 | 104.6 | 6.4 | 111.13 | 9.52 | 13.49 | 116 | 85.7 | 104.8 | 106.4 | 84.1 |
| 80 | 3 | ZYDQ647-2500LB | ZYDQ6472500XLX3 | 578 | 305 | 228.6 | M33 | 8-36 | 66.7 | 127 | 6.4 | 127 | 9.53 | 13.49 | 138 | 108 | 127 | 128.6 | 106.4 |
| 100 | 4 | ZYDQ647-2500LB | ZYDQ6472500XLX4 | 673 | 355 | 273.0 | M39x3 | 8-42 | 76.2 | 157.2 | 6.4 | 157.18 | 11.13 | 16.66 | 168 | 131.8 | 157.2 | 158.8 | 130.2 |
| 150 | 6 | ZYDQ647-2500LB | ZYDQ6472500XLX6 | 914 | 485 | 358.3 | M52x3 | 8-55 | 108.0 | 215.9 | 6.4 | 228.6 | 12.7 | 19.84 | 227 | 190.5 | 215.9 | 217.5 | 188.9 |
| 200 | 8 | ZYDQ647-2500LB | ZYDQ6472500XLX8 | 1022 | 550 | 438.2 | M52x3 | 12-55 | 127.0 | 269.7 | 6.4 | 279.4 | 14.27 | 23.01 | 281 | 238.1 | 269.9 | 271.5 | 236.5 |
| 250 | 10 | ZYDQ647-2500LB | ZYDQ6472500XLX10 | 1270 | 675 | 539.8 | M64x3 | 12-68 | 165.1 | 323.8 | 6.4 | 342.9 | 17.48 | 30.18 | 335 | 285.8 | 323.8 | 325.4 | 284.2 |
| 300 | 12 | ZYDQ647-2500LB | ZYDQ6472500XLX12 | 1422 | 760 | 619.1 | M70x3 | 12-74 | 184.2 | 381 | 6.4 | 406.4 | 17.48 | 33.32 | 392 | 342.9 | 381 | 382.6 | 341.3 |
The integrally forged steel body features dense, robust construction with high pressure rating, excellent heat resistance and impact resistance. The fixed ball structure ensures stable operating torque suitable for high-pressure service. The single-acting spring return design enables automatic fail-safe reset upon air loss to protect pipeline systems. Built-in handwheel provides manual emergency operation. Self-seating valve seats offer superior tight shut-off performance. Its straight-through bore provides high flow capacity and low pressure loss. Various automation accessories are available for flexible configuration to support remote control.
