Product model: ZJHM, ZMAM
Nominal diameter: DN25 ~ 300mm
Pressure range: PN1.6 ~ 6.4Mpa
Service temperature: - 40 ℃ ~ + 450 ℃
Flange standard: JB / T79.1-1994
Valve body material: WCB(ZG230-450) CF3CF8 CF8M
Valve core material: 1Cr18Ni9、0Cr18Ni12Mo2Ti CF8 CF8M
PRODUCT OVERVIEW
Pneumatic diaphragm sleeve regulating valve is commonly used in automatic control system. It adopts double sealing structure and is composed of multi spring pneumatic diaphragm actuator and low flow resistance fine small sleeve regulating valve body. The multi spring actuator has low height, light weight and simple equipment. The flow passage of the fine and small valve body is s-streamlined, which has the advantages of good stability, not easy to produce vibration, low noise, low temperature sensitivity, compact structure, light weight, sensitive action, small pressure drop loss, large valve capacity, accurate flow characteristics, convenient maintenance and so on. It can be used in harsh working conditions. The valve is especially suitable for occasions with low leakage requirements and large pressure difference before and after the valve.
PRODUCT FEATURES
1. The balanced valve core (sleeve guide) structure is adopted, with small axial unbalanced force, large allowable differential pressure and good stability.
2. The sleeve has strong interchangeability, convenient disassembly and easy maintenance.
3. The all metal valve core structure is suitable for a variety of working occasions and reaches the level IV leakage standard.
4. The valve body is designed into a constant cross-section low flow resistance channel according to the principle of hydrodynamics, with large adjustable range, inherent adjustable ratio and increased rated flow coefficient.
5. The actuator adopts multi spring structure, which reduces the height and weight.
MAIN TECHNICAL PARAMETERS
| Nominal diameter(DN) | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Seat diameter(DN) | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | |
| Rated flow coefficient(KV) | Straight line | 11 | 17.6 | 27.5 | 44 | 69 | 110 | 176 | 275 | 440 | 630 | 1000 | 1600 |
| Equal percentage | 10 | 16 | 25 | 40 | 63 | 100 | 155 | 250 | 370 | 580 | 900 | 1300 | |
| Allowable differential pressure(MPa) | 6.4 | 5.2 | 5.2 | 4.6 | 4.6 | 3.7 | 3.7 | 3.5 | 3.1 | 3.1 | 2.6 | 2.2 | |
| Nominal pressure(MPa) | 1.6、2.5、4.0、6.4、10.0 | ||||||||||||
| Rated stroke(mm) | 16 | 25 | 40 | 60 | 100 | ||||||||
| Matching actuator model | ZHA/B-22 | ZHA/B-23 | ZHA/B-34 | ZHA/B-45 | ZHA/B-56 | ||||||||
| 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 | Balanced spool (sleeve guide) | ||||||||||||
| Flow characteristics | Straightness, equal percentage | ||||||||||||
TECHNICAL PARAMETERS OF ACTUATOR
| Configure actuator category | ZHA/BMulti spring thin film actuator | ||||
|---|---|---|---|---|---|
| Actuator model | 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 | ||||
MATERIAL OF MAIN PARTS
| 1 | Valve body | WCB | 304 | 316 | 316L |
|---|---|---|---|---|---|
| 2 | shim | PTFE\Graphite gasket | PTFE\Graphite gasket | PTFE\Graphite gasket | PTFE\Graphite gasket |
| 3 | Sleeve | 304 | 304 | 316 | 316L |
| 4 | spool | 304 | 304 | 316 | 316L |
| 5 | Middle sealing gasket | PTFE\Graphite gasket | PTFE\Graphite gasket | PTFE\Graphite gasket | PTFE\Graphite gasket |
| 6 | Valve cover | WCB | 304 | 316 | 316L |
| 7 | Valve stem | 304 | 304 | 316 | 316L |
| 8 | Filler | PTFE/Graphite | PTFE/Graphite | PTFE/Graphite | PTFE/Graphite |
| 9 | Bolt | 25 | Stainless steel | Stainless steel | Stainless steel |
| 10 | Packing gland | WCB | 304 | 316 | 316L |
MAIN PERFORMANCE PARAMETERS
| 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 | |||
MAIN OVERALL DIMENSIONS
| Nominal diameterDN(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 | |
| D | 220 | 220 | 220 | 220 | 270 | 270 | 270 | 320 | 320 | 320 | 400 | 400 | |
