- Detail
- Parameters
Overview
Pneumatic direct control valve,Suitable for precision fluid adjustment of working conditions
According to the body structure can be divided into: pneumatic single-seat control valve,pneumatic double-seat control valve,pneumatic sleeve control valve
Pneumatic Single-seat Control valve leakage is extremely small,
but it can withstand Differential pressure is also smaller.
pneumatic double-seat control valve leakage is slightly larger,
but it can withstand Differential pressure is larger. The price is slightly expensive.
Pneumatic sleeve valve combines the advantages of the above two control valve,，Leakage rate samller than double-seat control valve，But it can withstand the Differential pressure is greater than the single-seat valve,It is an ideal choice.But the price is slightly more expensive than the first two.
The control section of regulating valve general choose BZH series pneumatic diaphragm actuator
BZH series pneumatic diaphragm actuator，It is a multi-spring single function linear actuator，It has small size, light weight, easy operation and maintenance, etc. BZH series pneumatic diaphragm actuator change input pressure of pneumatic control instruments into a push rod displacement，You can adjust the valve spool is moved to a position corresponding to the input signal.This actuator is multi-spring type ，Its compact structure, large output force.
According to user requirements, can be equipped with positioner, Air filter pressure reducer, limit switches, hand wheel, the solenoid valve ect.
Control valve parameters
Body material: cast iron, cast steel, cast stainless steel, etc.
Pressure Level：1.6MPa、4.0MPa、6.4MPa
Connection: flange connection according to JB79-59
Temperature range: room temperature -20 ℃ ~ + 230 ℃ thermal fin type -60 ℃ ~ + 450 ℃
Action form: Positive action (air-to-close) or Counteraction ( air to open)
Flow characteristics: equal percentages, linear
Leakage quantity: single seat valve: 0.01% × rated Kv
Double seat valve, sleeve valve: 0.5% × rated Kv
Actuator parameters
Refer to this brochure "Valve Actuator" section.
Features
· A combination of BZH series pneumatic diaphragm actuator with single-seat control valve
· This Series Actuator which install with Pneumatic single-seat control valve,
Small size, light weight, easy equipment.
· Single-seat control valve 's structure Compact, reliable sealing.
· Quick action ,a small amount of leakage, 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 ect.
Specification parameter Table
Nominal diameter DN | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | |||
Valve core diameter（mm） | 10 | 12 | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 |
Rated flow coefficient Kv | 1.2 | 2 | 3.2 | 5 | 8 | 12 | 20 | 32 | 50 | 80 | 120 | 200 | 280 | 450 | 700 | 1100 |
Nominal pressure PN MPa | 1.6 4.0 6.4 | |||||||||||||||
With BZH pneumatic actuator | BZHA/B-11 | BZHA/B-22 | BZHA/B-23 | BZHA/B-34 | BZHA/B-45 | BZHA/B-56 | ||||||||||
Reted travel （mm） | 10 | 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:Large diameter single-seat control valve can be customized according to user requirements
About Actuator Description，Please refer to the sample "Valve Actuator" section.
Overall dimensions Chart
Normal Diameter DN | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | |
L | 1.6MPa | 181 | 184 | 184 | 222 | 254 | 276 | 298 | 352 | 415 | 451 | 600 | 650 | 740 |
4.0MPa | 194 | 197 | 197 | 235 | 267 | 292 | 317 | 368 | 425 | 473 | 610 | 670 | 770 | |
6.4MPa | 206 | 210 | 210 | 251 | 286 | 311 | 337 | 394 | 435 | 508 | 650 | 690 | 800 | |
H | Normal temperature
| 381 | 445 | 451 | 563 | 578 | 624 | 627 | 631 | 756 | 764 | 803 | 1039 | 1064 |
Thermal Fin Type | 517 | 581 | 587 | 691 | 706 | 787 | 790 | 794 | 953 | 961 | 1000 | 1235 | 1259 | |
φA | 236 | 285 | 285 | 360 | 470 | 620 | ||||||||
Note:Large diameter single-seat control valve can be customized according to user requirements
