General model: ZJHQ (X)
Nominal diameter: DN25-300mm
Nominal pressure: PN1.6 ~ 16MPa
Temperature range: - 40 ℃ ~ + 450 ℃
Flange size: HG / T20592-2009
Leakage standard: GB / T4213-1992
Valve body material:ZG230-450、ZG1Cr18Ni9
Valve core material: 1Cr18Ni9、ZG1Cr18Ni9
Packing: PTFE, flexible graphite
PRODUCT OVERVIEW
The pneumatic diaphragm three-way regulating valve is composed of a multi spring diaphragm actuator and a three-way regulating valve body. Take the air source (compressed air) as the power and receive the industrial signal (4 ~ 20mA) to control the medium. The cylindrical thin-wall window valve core guide is adopted, which is different from the bushing guide of plunger valve core. The unique performance of the three-way regulating valve is (diversion and confluence), which divides the fluid medium into two flows through the three-way valve, or combines the two fluids into one fluid through the three-way valve. It is widely used to accurately control the process parameters of gas, liquid and other media, such as pressure, flow, temperature and liquid level.
PRODUCT FEATURES
1. The three-way regulating valve has the characteristics of (diversion and confluence), which divides the fluid into two flows through the three-way valve, or combines the two fluids into one fluid through the three-way valve;
2. The valve can be selected according to the on-site service temperature or pressure. The temperature can be customized (- 40 ~ 196 ℃ low temperature type, 40 ℃ ~ + 450 ℃ normal temperature type) and the high pressure can reach 16MPa.
MAIN TECHNICAL PARAMETERS
| Nominal diameter(DN) | 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) | Diverter valve | 6.3 | 8.5 | 13 | 21 | 34 | 53 | 85 | 135 | 210 | 340 | 535 | 800 | 1360 |
| Confluence valve | - | - | - | - | - | - | 85 | 135 | 210 | 340 | 535 | 800 | 1360 | |
| Allowable differential pressure(MPa) | 3.5 | 3.2 | 2.2 | 2.2 | 1.4 | 1.38 | 0.94 | 0.61 | 0.51 | 0.36 | 0.2 | 0.19 | 0.13 | |
| Nominal pressure(MPa) | 1.6、2.5、4.0、6.4、10.0 | |||||||||||||
| Matching actuator model | ZHA/B-22 | ZHA/B-23 | ZHA/B-34 | ZHA/B-45 | ZHA/B-56 | |||||||||
| Rated stroke(mm) | 16 | 25 | 40 | 60 | 100 | |||||||||
| Bonnet form | Standard type (- 17 ~ + 250 ℃), high temperature type (+ 250 ~ + 450 ℃), low temperature type (- 40 ~ - 196 ℃), bellows sealing type (- 40 ~ + 350 ℃) | |||||||||||||
| Gland type | Bolt compression type | |||||||||||||
| Sealing packing | V-type PTFE packing, V-type flexible graphite packing | |||||||||||||
| Spool form | Double guide sleeve valve core | |||||||||||||
| Flow characteristics | Straightness, equal percentage | |||||||||||||
TECHNICAL PARAMETERS OF ACTUATOR
Actuator model
| Configure actuator category | ZHA/B Multi spring thin film actuator | ||||
|---|---|---|---|---|---|
| ZHA/B-22 | ZHA/B-23 | ZHA/B-34 | ZHA/B-45 | ZHA/B-56 | |
| Effective area(cm2) | 350 | 350 | 560 | 900 | 1400 |
| trip(mm) | 10、16 | 24 | 40 | 40、60 | 100 |
| Spring range(KPa) | 20～100（standard）、20-60、60-100、40-200、80-240 | ||||
| Diaphragm material | Nitrile rubber with nylon cloth, ethylene propylene rubber with nylon cloth | ||||
| Air supply pressure | 140～400KPa | ||||
| air connection | RC1/4" | ||||
| ambient temperature | -30～+70℃ | ||||
| Accessories available | Positioner, air filter pressure reducer, holding valve, travel switch, valve position transmitter, hand wheel mechanism, etc | ||||
| Action form | Air off (B) - valve position open (FO) in case of gas loss; Gas open (K) - valve position closed (FC) in case of loss of gas | ||||
MAIN PERFORMANCE INDEXES
| Project | Without positioner | With locator | ||
|---|---|---|---|---|
| Basic error% | ±5.0 | ±1.0 | ||
| Return difference% | 3.0 | 1.0 | ||
| Deadband% | 3.0 | 0.4 | ||
| Deviation from starting point% | Gas on | Starting point | ±2.5 | ±1.0 |
| Starting point | ±5.0 | ±1.0 | ||
| Gas off | Starting point | ±5.0 | ±1.0 | |
| End | ±2.5 | ±1.0 | ||
| Rated stroke deviation% | ≤2.5 | |||
| Leakage L / h | 0.01%×Valve rated capacity | |||
| Adjustable range R | 30：1 | |||
MATERIAL OF MAIN PARTS
| 1 | valve body | WCB | 304 | 316 | 316L |
|---|---|---|---|---|---|
| 2 | Valve seat | 304 | 304 | 316 | 316L |
| 3 | Spool | 304 | 304 | 316 | 316L |
| 4 | Shim | PTFE\Graphite gasket | |||
| 5 | Copper sleeve | brass | |||
| 6 | Guide sleeve | 304 | 304 | 316 | 316L |
| 7 | Middle sealing gasket | PTFE\Graphite gasket | |||
| 8 | Valve cover | WCB | 304 | 316 | 316L |
| 9 | Filler | PTFE/Graphite | |||
| 10 | Packing gland | WCB | 304 | 316 | 316L |
| 11 | Valve stem | 304 | 304 | 316 | 316L |
MAIN CONNECTION DIMENSIONS
| Nominal diameter DN(mm) | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| L | PN16/25 | 185 | 200 | 220 | 250 | 275 | 300 | 350 | 410 | 450 | 550 | 670 | 770 |
| PN40 | 190 | 210 | 230 | 255 | 285 | 310 | 355 | 425 | 460 | 560 | 740 | 805 | |
| PN64 | 200 | 210 | 235 | 265 | 295 | 320 | 370 | 440 | 475 | 570 | 750 | 820 | |
| H | PN16/25 | 117 | 120 | 139 | 144 | 188 | 208 | 220 | 268 | 278 | 320 | 441 | 503 |
| PN40 | 124 | 128 | 145 | 150 | 195 | 220 | 230 | 280 | 290 | 335 | 465 | 528 | |
| PN64 | 130 | 135 | 155 | 170 | 205 | 240 | 255 | 295 | 310 | 360 | 480 | 550 | |
| H1 | 165 | 185 | 185 | 205 | 245 | 255 | 270 | 335 | 365 | 430 | 560 | 680 | |
| H2 | 298 | 298 | 298 | 298 | 380 | 380 | 380 | 510 | 510 | 510 | 650 | 650 | |
| H3 | 177 | 177 | 177 | 177 | 182 | 182 | 182 | 182 | 182 | 218 | 218 | 218 | |
| L1 | 280 | 280 | 280 | 280 | 350 | 350 | 350 | 475 | 475 | 475 | 560 | 560 | |
| A | 282 | 282 | 282 | 282 | 360 | 360 | 360 | 470 | 470 | 470 | 580 | 580 | |
| C | 220 | 220 | 220 | 220 | 270 | 270 | 270 | 320 | 320 | 320 | 400 | 400 | |
