- Detail
- Parameters
Product Features
· Combination of BZH series Pneumatic diaphragm actuator and double seat control valve.
·This series pneumatic double seat control valve 's actuators
with small size, light weight, easy installation and maintenance.。
· Double seat control valve has upper and lower valve spool,Fluid in the upper and lower thrust on the spool,Its opposite direction and close in size,Unbalanced force is small,It can withstand greater pressure.
· Small flow resistance, rated flow coefficient is large than the same size single-seat control valve.
· Reliable action, Bear a large Differential pressure, flow characteristics of precision, Wide adjustable range.
· According to user requirements, can be equipped with Positioner, Air filter pressure reducer, limit switches, hand wheel, the solenoid valve.
Specification Table
Nominal diameter DN | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 |
Rated flow coefficient Kv | 10 | 16 | 25 | 40 | 63 | 100 | 160 | 250 | 400 | 630 | 1000 | 1600 |
Nominal pressure PN MPa | 1.6 4.0 6.4 | |||||||||||
With BZH Type pneumatic actuator | BZHA/B-22 | BZHA/B-23 | BZHA/B-34 | BZHA/B-45 | BZHA/B-56 | |||||||
Rated travel （mm） | 16 | 25 | 40 | 60 | 100 | |||||||
Flow characteristics | Equal percentage Linear | |||||||||||
Mode of action | Air to open Air to close | |||||||||||
temperature range℃ | -20℃~+230℃ -60℃~+450℃ | |||||||||||
Note: The large-diameter double seat control valve can be customized according to user requirements.
About descripment of actuator，see "Valve Actuator" section.
Overall dimensions Chart
Normal Diameter DN | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | |
L | 1.6MPa | 185 | 200 | 220 | 250 | 275 | 300 | 350 | 410 | 450 | 550 | 670 | 770 |
4.0MPa | 190 | 210 | 230 | 255 | 285 | 310 | 355 | 425 | 460 | 560 | 740 | 803 | |
6.4MPa | 200 | 210 | 235 | 265 | 295 | 320 | 370 | 440 | 475 | 570 | 750 | 819 | |
H | Normal temperature Type
| 450 | 453 | 573 | 578 | 634 | 644 | 656 | 781 | 791 | 833 | 1443 | 1519 |
Thermal Fin Type | 586 | 589 | 701 | 706 | 797 | 807 | 819 | 978 | 988 | 1030 | 1745 | 1765 | |
φA | 285 | 285 | 360 | 470 | 620 | ||||||||
Note: The large-diameter double seat control valve can be customized according to user requirements.
