Electric Small Flow Control Valve Product Overview
The ZDHW electric small flow control valve from our company can adapt to various working conditions with different flow requirements. Equipped with the PSL series electronic electric actuator incorporating German technology, the electric actuator includes a servo amplifier internally, eliminating the need for an external servo amplifier. It operates with input control signals (4–20mA DC or 1–5V DC) and single-phase power supply, enabling regulation of parameters such as flow. The electric small flow control valve is tailored for specific special working conditions. The micro flow electric control valve is forged from a forged valve body, making it easy to construct high-pressure designs. The valve core size can range from 0.15–15 mm, processed to precise tolerances. The micro flow electric control valve features compact size, light weight, simple wiring, high flow capacity, and high regulation accuracy. It is widely used in industrial process automation systems across industries such as power, petroleum, chemical, metallurgy, environmental protection, light industry, teaching, and scientific research equipment.
Electric Small Flow Control Valve Technical Parameters
| Nominal Diameter (DN) | G3/8", 1/2", G3/4", G1" |
|---|
| Valve Seat Diameter (dn) | 1.5 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 15 |
| Rated Flow Coefficient KV | 0.025 | 0.05 | 0.08 | 0.12 | 0.20 | 0.32 | 0.50 | 0.80 | 1.00 | 1.40 | 1.55 | 1.85 | 2.23 |
| Allowable Pressure Difference (MPa) | ≤ Nominal Pressure |
| Nominal Pressure (MPa) | 1.6, 2.5, 4.0, 6.4, 10.0, 16.0, 25.0, 32.0 |
| Rated Stroke (mm) | 8 | 10 | 12 |
| Valve Cover Type | Standard Type (-17 to +250°C), High-Temperature Type (+250 to +450°C), Low-Temperature Type (-40 to -196°C), Bellows Seal Type (-40 to +350°C) |
| Gland Type | Bolted Gland Type |
| Sealing Packing | V-Type PTFE Packing, V-Type Flexible Graphite Packing |
| Valve Core Type | Single Seat |
| Flow Characteristics | Equal Percentage, Linear |
| Matching Actuator Type | PSL Series, 3810L Series, and other electric actuators (customer-specified brands are also acceptable) |
| Actuator Parameters | Power Supply Voltage: 220V, Input Signal: 4-20mA or 1-5V DC, Output Signal: 4-20mA DC |
| Protection Rating: Equivalent to IP65, Explosion-Proof Marking: ExdⅡBT4 (ExdⅡBT6 custom order), Manual Operation Function: Handwheel |
| Ambient Temperature: -25 to +70°C, Ambient Humidity: ≤95% |
Electric Small Flow Control Valve Performance Indicators
| Item | Indicator Value |
|---|
| Basic Error % | With 3810L ±2.5; With PSL ±1.0 |
| Hysteresis % | With 381L ±2.0; With PSL ±1.0 |
| Dead Zone % | 1.0 |
| Start-End Point Deviation % | Electric Open | Start Point ±2.5 | End Point ±2.5 |
| Start Point ±2.5 | End Point ±2.5 |
| Electric Close | Start Point | ±2.5 |
| End Point | ±2.5 |
| Rated Stroke Deviation % | ≤2.5 |
| Leakage L/h | 0.01% × Valve Rated Capacity |
| Adjustable Range R | 30:1 |
Electric Small Flow Control Valve Component Materials
| Valve Body | WCB | 304 | 316 | 316L |
|---|
| Gasket | PTFE/Graphite Gasket | PTFE/Graphite Gasket | PTFE/Graphite Gasket | PTFE/Graphite Gasket |
| Valve Seat | 304 | 304 | 316 | 316L |
| Valve Core | 304 | 304 | 316 | 316L |
| Valve Cover | WCB | 304 | 316 | 316L |
| Valve Stem | 304 | 304 | 316 | 316L |
| Packing | PTFE/Graphite | PTFE/Graphite | PTFE/Graphite | PTFE/Graphite |
| Gland | WCB | 304 | 316 | 316L |
Electric Small Flow Control Valve Connection Dimensions Diagram
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|---|
| Electric Small Flow Control Valve (with imported PS actuator) | Electric Small Flow Control Valve (with imported 381 actuator) |
|---|
Electric Small Flow Control Valve Connection Dimensions
| Nominal Diameter DN | Valve Seat Diameter dn | L | H | H1 | H2 | D |
|---|
| G3/8" | 1.5–15 | 95 | 30 | 130 | 465 | 177 |
| G1/2" | 1.5–15 | 95 | 30 | 130 | 465 | 177 |
| G3/4" | 1.5–15 | 110 | 30 | 130 | 465 | 177 |
| G1" | 1.5–15 | 110 | 30 | 130 | 465 | 177 |
Electric Small Flow Control Valve Product Selection
(1) Valve body parameters: nominal diameter, working pressure, process medium, application scenario, valve body material, and other series parameters.
(2) Actuator parameters: actuator type, control method, control signal (4-20mA, 1-5V), action mode (air-to-open, air-to-close).
Please provide the above technical parameters in as much detail as possible to facilitate accurate product selection by our production and technical personnel. If you have any questions, you can call us, and we will do our best to provide you with high-quality service!
