Our ZDHG electric diaphragm regulating valve features a simple structure, low flow resistance, and higher flow capacity than other valves of the same diameter. It is leak-proof, suitable for adjusting high-viscosity and suspended particle fluids. Depending on the diaphragm material (rubber or polytetrafluoroethylene), it is applicable for regulating strong alkalis and highly corrosive media. This electric diaphragm regulating valve is composed of a diaphragm valve paired with various straight-travel electric actuators. The electric actuator used with the electric diaphragm regulating valve contains a servo system, eliminating the need for an additional amplifier. It can be controlled with input control signals (4-20mA or 1-5VDC) and a single-phase power supply, enabling adjustments of parameters such as pressure, flow rate, temperature, and level.
Electromagnetic Diaphragm Control Valve - Technical Parameters
| Nominal Pipe Size (NPS) | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 |
|---|
| Valve Seat Diameter (DN) | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 |
| Flow coefficient | KV | 8 | 12 | 16 | 38 | 60 | 68 | 90 | 150 | 300 | 500 | 600 | 1200 | 1800 |
| Allowable Pressure Difference (MPa) | 1.0 | 0.89 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 0.6 | 0.38 | 0.15 | 0.09 |
| Nominal Pressure (MPa) | 1.6、2.5、4.0、6.4 |
| Rated Stroke (mm) | 10 | 16 | 25 | 40 | 60 | 100 |
| Valve cover type | Standard Type (-17 to +250℃) |
| Press-on Cap Style | Bolt-tensioned |
| Sealed Packing | V-shaped polytetrafluoroethylene filler, impregnated polytetrafluoroethylene asbestos filler, asbestos textile filler, graphite filler |
| Valve Core Style | Diaphragm type |
| Flow characteristics | Quick-opening feature |
| Configuration Actuator Type | 381L Series Electric Actuators, PSL Series Electric Actuators, (also applicable to other brand actuators) |
| Actuator Parameters | Power Voltage: 220V/50Hz, Input Signal: 4-20mA or 1-5V·DC, Output Signal: 4-20mA·DC |
| Protection Level: Equivalent to IP55, Explosion-proof Mark: ExdⅡBT4 (ExdⅡBT6 available for special customization), Manual Operation Function: Handle |
Ambient Temperature: -25°C to +70°C, Relative Humidity: ≤95%
|
Electromagnetic Diaphragm Control Valve - Performance Specifications
| Project | Index Value |
|---|
| Basic Error % | ≤±3.5 |
| Difference Return % | ≤2.5 |
| Dead Zone % | ≤3.0 |
| Always Point Deviation % | ±2.5 |
| Rated Stroke Deviation % | ±2.5 |
| Pure lag | ≤IS |
| Permitted Leakage L/H | Rubber diaphragm: 0, PTFE diaphragm: 0.5% × rated valve capacity (water under allowable pressure difference) |
| Insulating Resistance | Not less than 20M |
| Damping characteristics | No longer than three and a half weeks |
Electromagnetic Diaphragm Regulating Valve - Parts Material
| Valve body | HT200, ZG230-450, or the following material linings |
|---|
| Diaphragm | Dingquan rubber, natural rubber, polytetrafluoroethylene corrugated |
| Film | Nitrile rubber reinforced polyester fabric |
| Spring | 60S12Mn, valve body liner material and application range |
Electromagnetic Diaphragm Valve - Body Lining Material Applications
| Valve body liner | Operating Temperature (°C) | Applicable Medium |
|---|
| Unlined | -10～+175 | Suitable for non-corrosive media |
| Soft Rubber | -10～+85 | Excellent wear resistance, suitable for cement, clay, coal dust, etc. |
| Hard Rubber | -10～+85 | Suited for use with non-mechanical, salt, hydrochloric acid, plated metal solutions, soft water, chlorides, chlorine gas, etc. |
| Chloroprene rubber | -10～+105 | Corrosive mud suitable for animal oil, vegetable oil, and lubricating oil, with a wide pH range variation, offering excellent wear resistance. |
| Ding Quan rubber | -10～+120 | Excellent corrosion and wear resistance, better resistance to most inorganic acids and acidic mortars. |
| Enamel | -10～+175 | Suitable for inorganic acids, oxidic acids, halogens, alcohols, esters, and other compounds |
| Fluorine 46 | -10～+190 | Suitable for strong corrosive mediums such as sulfuric acid, hydrochloric acid, sodium hydroxide, etc. |
Electromagnetic Diaphragm Regulating Valve - Diaphragm Lining Material Applications
| Diaphragm material | Operating Temperature (°C) | Applicable Medium |
|---|
| Ding Quan rubber (Grade B) | -40～+100 | Most inorganic acids such as sulfuric acid, hydrofluoric acid, and phosphoric acid are applicable, with good corrosion resistance, as well as various alkalis and salts. |
| Natural Rubber (Grade Q) | -50～+100 | Primarily used for mineral acid mediums in water purification, inorganic salts, and alkenes. |
| Polytetrafluoroethylene | -10～+150 | Excellent chemical stability, resistant to strong acids, alkalis, and corrosion by strong oxidizers. |
Electromagnetic Diaphragm Regulating Valve - Product Selection
(1) Valve Body Parameters: Nominal Pipe 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 regarding 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 be dedicated to providing you with excellent service!
Related Names: Electric Diaphragm Control Valve, ZDHG Electric Corrosion-Resistant Control Valve
