Electric Cryogenic Control Valve Product Overview
The company's DWZRHP electric cryogenic control valve is composed of an imported electric actuator and an ultra-low temperature control valve body. The actuator includes servo functionality, accepts a unified 4-20mA or 1-5V·DC standard signal, converts the current signal into corresponding linear displacement, automatically controls the opening of the control valve, and achieves continuous adjustment of process parameters such as pressure, flow, temperature, and liquid level of the fluid in the pipeline. The electric cryogenic control valve is suitable for operation at temperatures below 0 to -196°C. It consists of an electric actuator and a valve body with an extended neck. The extended neck serves to keep the valve stem seal operating near ambient temperature and reduces the ingress of external heat. To minimize heat transfer, the extended neck adopts a thin-walled structure.
Electric Cryogenic Control Valve 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) | Single Seat | 6.9 | 11 | 17.6 | 27.5 | 44 | 69 | 110 | 176 | 275 | 440 | 630 | 875 | 1250 |
| Sleeve | 6.3 | 10 | 16 | 25 | 40 | 63 | 100 | 155 | 250 | 370 | 580 | 900 | 1300 |
| Allowable Pressure Difference (MPa) | Single Seat | 3.8 | 3.2 | 3.0 | 2.0 | 1.8 | 1.5 | 1.4 | 1.0 | 0.7 | 0.6 | 0.5 | 0.3 | 0.1 |
| Sleeve | 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 |
| Rated Travel (mm) | 16 | 25 | 40 | 60 | 100 |
| Bonnet Type | Cryogenic Type 0 to -196°C |
| Gland Type | Bolted Gland |
| Sealing Packing | V-Type PTFE Packing, V-Type Flexible Graphite Packing |
| Plug Type | Single Seat, Sleeve |
| Flow Characteristic | Equal Percentage, Linear |
| Matching Actuator Type | 3810 Series, PSL Series 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 Mark: ExdⅡBT4 (ExdⅡBT6 Special Order), Manual Operation: Handwheel |
| Ambient Temperature: -25 to +70°C, Ambient Humidity: ≤95% |
Electric Cryogenic 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 Travel Deviation % | ≤2.5 |
| Leakage L/h | 0.01% × Valve Rated Capacity |
| Adjustable Range R | 30:1 |
Electric Cryogenic Control Valve Component Materials
| Valve Body | CF8, CF8M, CF3, CF3M, 2520, 2507, Hastelloy, Titanium Alloy |
|---|
| Gasket | PTFE, Metal Graphite Gasket, Metal Serrated Gasket |
| Valve Seat | 304, 316, 316L, Special |
| Plug Assembly | 304, 316, 316L, Special |
| Packing | PTFE, PPL, Flexible Graphite |
| Gland | CF8, CF8M, CF3, CF3M, 2520, 2507, Hastelloy, Titanium Alloy |
Electric Cryogenic Control Valve Product Selection
(1) Valve Body Parameters: Nominal diameter, working pressure, process medium, application, 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 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!
Related Names: Electric Cryogenic Control Valve, Electric Control Valve for Liquid Nitrogen, -196°C Electric Control Valve
