Our ZJHM pneumatic diaphragm sleeve regulating valve features a double-sealed structure, consisting of a multi-spring pneumatic diaphragm actuator and a low-flow resistance precision small sleeve regulating valve body. The multi-spring actuator is characterized by its low height, light weight, and easy installation. The precision small valve body has an S-shaped streamline flow passage. The pneumatic diaphragm sleeve regulating valve boasts compact structure, light weight, sensitive operation, low pressure drop loss, large valve capacity, accurate flow characteristics, and easy maintenance, making it suitable for stringent working conditions. Particularly suitable for applications with low leakage requirements and significant pressure differences before and after the valve. The main features of the pneumatic sleeve regulating valve are as follows:
(1) Equipped with a balanced double-sealed valve core, allowing for a large pressure difference under unbalanced forces, ensuring stable operation.
(2) The valve core guide surface is large, which can improve oscillation caused by eddy currents and impacts.
(3) Reduces noise by approximately 10dB compared to standard single and double seat regulating valves.
(4) Simple structure for easy assembly, disassembly, and maintenance.
Air Actuated Diaphragm Control Valve - Technical Parameters
| Nominal Pipe Size (NPS) | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Valve Seat Diameter (DN) | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | |
| Rated Flow Coefficient (KV) | Straight line | 10 | 11 | 17.6 | 27.5 | 44 | 69 | 110 | 176 | 275 | 440 | 630 | 1000 | 1600 |
| Please wait for 100% | 6.3 | 10 | 16 | 25 | 40 | 63 | 100 | 155 | 250 | 370 | 580 | 900 | 1300 | |
| Allowable Pressure Difference (MPa) | 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 | |
| Nominal Pressure (MPa) | 1.6、2.5、4.0、6.4、10.0 | |||||||||||||
| Rated Stroke (mm) | 16 | 25 | 40 | 60 | 100 | |||||||||
| Model of actuator used | ZHA/B-22 | ZHA/B-23 | ZHA/B-34 | ZHA/B-45 | ZHA/B-56 | |||||||||
| Valve cover style | Standard Type (-17～+250℃), High Temperature Type (+250～+450℃), Low Temperature Type (-40～-196℃), Bellows Sealed Type (-40～+350℃) | |||||||||||||
| Screw Cap Style | Bolt-tensioned | |||||||||||||
| Sealed packing material | V-shaped polytetrafluoroethylene packing, V-shaped flexible graphite packing | |||||||||||||
| Valve core style | Balanced Core Valve (Sleeve Guided) | |||||||||||||
| Flow characteristics | Linearity, equal percentage | |||||||||||||
Air Actuated Diaphragm Sleeve Regulating Valve - Actuator
| Configuration Actuator Type | ZHA/B Multi-spring Diaphragm 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 |
| Travel Distance (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 laminated with nylon fabric, Ethylene Propylene rubber laminated with nylon fabric | ||||
| Supply Pressure | 140～400KPa | ||||
| Gas Source Interface | RC1/4" | ||||
| Ambient Temperature | -30～+70℃ | ||||
| Available accessories | Locators, air filter-regulators, holding valves, limit switches, position transmitters, handwheels, etc. | ||||
| Function form | Gas-Closed (B) - Valve opens (FO) during air loss; Gas-Open (K) - Valve closes (FC) during air loss | ||||
Pneumatic Diaphragm Actuated Control Valve - Performance Specifications
| Project | No GPS Tracker | Tracker equipped | ||
|---|---|---|---|---|
| Basic Error % | ±5.0 | ±1.0 | ||
| Difference Rate % | 3.0 | 1.0 | ||
| Dead Zone % | 3.0 | 0.4 | ||
| Always Point Deviation % | Gas valve | Starting Point | ±2.5 | ±1.0 |
| Starting Point | ±5.0 | ±1.0 | ||
| Air Valve | Origin | ±5.0 | ±1.0 | |
| End Point | ±2.5 | ±1.0 | ||
| Rated travel deviation % | ≤2.5 | |||
| Leakage Rate L/h | 0.01% x rated capacity | |||
| Adjustable Range: R | 30：1 | |||
Pneumatic Diaphragm Cylinder Regulating Valve - Component Material
| Serial Number | Part Name | Part materials | |||
|---|---|---|---|---|---|
| 1 | Valve body | WCB(ZG25) | CF8(304) | CF8M(316) | CF3M(316L) |
| 2 | Gasket | PTFE, metal-graphite wrapped gaskets | |||
| 3 | Sleeve | 304 | 304 | 316 | 316L |
| 4 | Valve plug | 304 | 304 | 316 | 316L |
| 5 | Middle pad | PTFE, metallic graphite gasket | |||
| 6 | Valve Cover | WCB(ZG25) | CF8(304) | CF8M(316) | CF3M(316L) |
| 7 | Valve Stem | 304 | 304 | 316 | 316L |
| 8 | Filling Material | PTFE, flexible graphite | |||
| 9 | Sealed Cap | WCB(ZG25) | CF8(304) | CF8M(316) | CF3M(316L) |
Pneumatic Diaphragm Actuated Control Valve - Product Selection
(1) Valve Body Parameters: Nominal Bore Size, Working Pressure, Process Medium, Application, Valve Body Material, and a series of other parameters.
(2) Actuator Parameters: Actuator Type, Control Method, Control Signal (4-20mA, 1-5V), Operating Mode (Air-Open, Air-Closed)
Please provide as much detail as possible on the above technical specifications to facilitate our production and technical team in accurately selecting the right product for you. Should you have any questions, feel free to call us, and we will certainly strive to provide you with excellent service!
