Pneumatic film temperature control valve
Pneumatic film temperature control valve
Nominal diameter: DN20 ~ 300mm
Nominal pressure: PN1.6~10.0MPa
Ambient temperature: -30 ~ + 70 ℃
Medium gas, liquid, vapor, etc.: Medium
Drive mode: pneumatic
Design criteria: GB / T17213
Flange standard: GB / T9113, JB / T79 , HG20594 and other standard
Inspection standards: GB / T4213
Form connect: flange (FF RF RTJ), welding (SW BW), thread ( Suitable for 1 "or less
First, pneumatic high temperature regulating valve product overview
ZJSGW-P (M) series of pneumatic high temperature control valve, the multi-spring pneumatic film actuator and low resistance high temperature regulating valve body composition, multi-spring actuator low height, light weight, easy to install.
Pneumatic high temperature control valve body flow was S streamline, with compact, light weight, sensitive, small pressure drop loss, valve capacity, accurate flow characteristics, easy maintenance, etc., can be used for harsh working conditions. Pneumatic membrane thermostatic valve equipped with electric - gas valve positioning or pneumatic - pneumatic valve positioner, by inputting 4-20mA control signal to control the operation, can realize the process pipeline fluid medium automatic regulation and control.
Pneumatic temperature control valve is widely used in gas, liquid, steam and other media process parameters such as pressure, flow, temperature, liquid level and other parameters remain at a given value.
Pneumatic high temperature control valve is particularly suitable for allowing a small amount of leakage, small pressure difference between the valve and the high temperature of the occasion.
Second, pneumatic temperature control valve main technical parameters
1 , the valve body
| Body form | Direct casting ball valve |
Nominal diameter | DN20 ~ 300mm |
Nominal pressure | PN 1.6, 2.5, 4.0, 6.4, 10.0 MPa |
Flange standard | GB / T9113, JB / T79, HG20594 and other standards |
Connection Type | Flange (FF RF RTJ), Weld (SW BW), Thread (For 1 "or less) |
Cover form | High temperature type +250 ~ +450 ℃, ultra-high temperature type +250 ~ +560 ℃ |
Gland type | Bolt compression type |
Sealed packing | V-type PTFE packing, PTFE impregnated asbestos packing, asbestos textile packing, graphite packing |
Body material | Cast steel (WCB), stainless steel (CF8, CF8M, CF3, CF3M), chrome molybdenum steel |
2 , the valve parts
| Spool form | Single seat, sleeve structure |
Flow characteristics | Linear, equal percentage |
Spool material | Stainless steel (304,304L, 316,316L) |
3 , implementing agencies and annex, the role of the form
| Actuator type | ZHA / B multi-spring film actuator | ||||
Actuator model | ZHA / B-22 | ZHA / B-23 | ZHAB-34 | ZHA / B-45 | ZHA / B-56 |
Effective area (cm2) | 350 | 350 | 560 | 900 | 1400 |
Travel (mm) | 10,16 | 25 | 40 | 40,60 | 100 |
Spring Range (KPa) | 20 to 100 (standard), 20 to 60, 60 to 100, 40 to 200, 80 to 240 | ||||
Diaphragm material | Nylon cloth rubber clip, EPDM clip nylon cloth | ||||
Supply pressure | 140 ~ 400KPa | ||||
Air source interface | RC1 / 4 " | ||||
Ambient temperature | |||||
Can be equipped with accessories | Locator, air filter pressure reducer, Paul-valve, hand wheel agencies | ||||
The role of form | Air-off (B) - Valve open during loss of air (FO); Air open (K) - Valve closed during loss of air (FC) | ||||
Third, pneumatic temperature control valve main performance indicators
project | Without locator | With locator | ||
Basic error% | ± 5.0 | ± 1.0 | ||
Backlash% | ≤3.0 | ≤1.0 | ||
dead zone% | ≤3.0 | ≤0.4 | ||
Always point deviation% | Open air | Start point | ± 2.5 | ± 1.0 |
Start point | ± 5.0 | ± 1.0 | ||
Qi off | Start point | ± 5.0 | ± 1.0 | |
end | ± 2.5 | ± 1.0 | ||
Rated travel deviation% | ≤2.5 | |||
Leakage L / h | 0.01% × valve rated capacity | |||
Adjustable range R | 30: 1 | |||
Fourth, pneumatic high temperature regulating valve rated flow coefficient Kv , to allow pressure
| Nominal diameter DN (mm) | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | |
Seat diameter (dn) | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | |
Rated flow coefficient (KV) | Single seat | 6.9 | 11 | 17.6 | 27.5 | 44 | 69 | 110 | 176 | 275 | 440 | 630 | 875 | 1250 |
Sleeve | 6.3 | 10 | 16 | 25 | 40 | 63 | 100 | 155 | 250 | 370 | 580 | 900 | 1300 | |
Allowable pressure difference (MPa) | Single seat | 3.8 | 3.2 | 3.0 | 2.0 | 1.8 | 1.5 | 1.4 | 1.0 | 0,7 | 0.6 | 0.5 | 0.3 | 0.1 |
Sleeve | 6.4 | 6.4 | 5.2 | 5.2 | 4.6 | 4.6 | 3.7 | 3.7 | 3.5 | 3.1 | 3.1 | 2.6 | 2.2 | |
Rated travel (mm) | 16 | 25 | 40 | 60 | 100 | |||||||||
Actuator model | ZHA / B-22 | ZHA / B-23 | ZHA / B-34 | ZHA / B-45 | ZHA / B-56 | |||||||||
Fifth, pneumatic high temperature control valve main connection size
| DN (mm) | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | |
L | PN16 / 25 | 181 | 184 | 200 | 222 | 254 | 276 | 298 | 352 | 410 | 451 | 550 | 640 | 880 |
PN40 | 194 | 197 | 200 | 235 | 267 | 292 | 317 | 368 | 425 | 473 | 640 | 760 | 910 | |
PN64 | 206 | 200 | 210 | 251 | 286 | 311 | 337 | 394 | 440 | 508 | 670 | 810 | 950 | |
H | PN16 / 25 | 52.5 | 57.5 | 75 | 75 | 85.5 | 92.5 | 100 | 110 | 142.5 | 158 | 170 | 195 | 230 |
PN40 | 52.5 | 57.5 | 75 | 75 | 82.5 | 92.5 | 100 | 117.5 | 150 | 167.5 | 187.5 | 205 | 245 | |
PN64 | 65 | 40 | 85 | 85 | 90 | 102.5 | 107.5 | 125 | 172.5 | 195 | 207.5 | 230 | 260 | |
H1 | 370 | 396 | 428 | 428 | 436 | 415 | 464 | 507 | 690 | 840 | 632 | 725 | 882 | |
H2 | 298 | 298 | 298 | 298 | 298 | 380 | 380 | 380 | 510 | 510 | 510 | 650 | 650 | |
H3 | 180 | 180 | 180 | 180 | 180 | 236 | 236 | 236 | 310 | 310 | 310 | 380 | 380 | |
L1 | 280 | 280 | 280 | 280 | 280 | 350 | 350 | 350 | 475 | 475 | 475 | 560 | 560 | |
A | 282 | 282 | 282 | 282 | 282 | 360 | 360 | 360 | 470 | 470 | 470 | 580 | 580 | |
C | 220 | 220 | 220 | 220 | 220 | 270 | 270 | 270 | 320 | 320 | 320 | 400 | 400 | |
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