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COVNA Electric Sleeve Control Valve
The electric single-seat ( sleeve ) adjustment valve is small in size and excellent in performance, and is a high-quality base type electric control valve product. It is suitable for production process control systems for general fluid media process conditions. The single seat valve has reliable operating characteristics, small seat leakage, coarse flow characteristics, wide adjustable range, compact structure and smooth flow path. This series of products has good performance and stable operation , and can meet the user’s control needs in a wide range of applications.
- Model: Electric control valve
- Size Range: 1'' to 12''
- Pressure Range: 1.6 to 6.4MPa
- Material: Stainless Steel, WCB
COVNA Cast Steel Electric Actuator Globe Control Valve Overview:
This product consists of 3810L series electronic electric actuator and a small single-seat ( sleeve ) regulating valve. The actuator has an integrated structure with built-in electronic controller modules, eliminating the need for additional servo amplifiers . It has high precision and is easy to install The characteristics of the sleeve valve are as follows:
- Adopting balanced valve core, the unbalanced force is small, the pressure difference is allowed to be large, and the operation is stable
- The large guide surface of the spool improves the oscillation caused by eddy currents and shocks and reduces damage
- The noise of the ordinary single and double seat valve regulating valve is reduced by about 10dB
- Simple structure, convenient assembly, and disassembly
| Type | Electric actuator, intelligent integrated |
| Usage | regulating |
| Power supply | 220VAC ±10 % 50Hz, 380VAC ±10 % 50Hz |
| Control signal | 4-20mA.DC, 1~5V DC |
| Action to close | Input signal increase, valve stem descend, valve close |
| Action to open | Input signal increase, valve stem ascend, valve open |
| Lag | ≤0.8 %FS |
| Linear type | ≤1 %FS |
| Operating temperature | WCB: -40℃～+250℃, -40℃~+450℃
Stainless Steel: -40℃～+250℃, -60℃～+450℃ |
| Intrinsic flow characteristics | Straight line, equal percentage(inherent adjustable ratio 50:1) |
| Sleeve electric control valve indicators technical parameter | |
| Basic error | ±1.0 % |
| Backlash | 1% |
| Deadzone | 1% |
| Leakage | 5*103 valve rated capacity |
| Rated flow characteristics | ±10% |
| Intrinsic flow characteristics | slope±30% |
| Single-seat electric indicators control valve technical parameter | |
| Basic error | ±2.5 % |
| Backlash | 1.5% |
| Deadzone | 3% |
| Leakage | 1*10^(-4) valve rated capacity |
| Rated flow characteristics | ±10% |
| Intrinsic flow characteristics | slope±30% |
Types of Electric Control Valves:
