Electric Steam temperature control valve Working principle
.Electric Steam temperature control valve material list
| Component name |
Control Valve Material |
| Body/Bonnet |
WCB/WCC/WC6/CF8/CF8M/CF3M |
| Valve spool/Seat |
304/316/316L(overlaying stellite alloy) |
| Packing |
Normal:-196～150℃ is PTFE,RTFE,>230℃ is flexible graphite |
| Bellows |
304/316/316L |
| Gasket |
Normal:Stainless steel with flexible graphite,Special:Metal tooth type gasket |
| Control valve stem |
2Cr13/17-4PH/304/316/316L |
Electric Steam temperature control valve Performance
| Electric temperature control valve Flow characteristic |
Linear, percentage, quick open |
| Allowable range |
50: 1 (CV<6.3 30: 1) |
| Rated Cv value |
Percentage CV1.6~630 ，linear CV1.8~690 |
| Electric temperature control valve Allowable leakage |
Metal seal: IV grade（0.01% rated capacity）
Soft seal: VI grade（foam grade）
Leakage standard: GB/T 4213 |
| Electric steam temperature control valve Performance |
| Intrinsic error (%) |
±1.0 |
| Return difference(%) |
≤1.0 |
| Dead zone(%) |
≤1.0 |
| Difference from beginning to end point(%) |
±2.5 |
| Rated travel difference(%) |
≤2.5 |
Electric Steam temperature control valve parameter
| Electric temperature control valve Type\ Method |
Electric actuator |
| DAL-30 series |
| Intelligent integrated type |
| Usage |
Regulating |
| Air supply pressure or Power supply voltage |
Power: AC 200V±10% 50Hz
Or Power: AC 380V±10% 50Hz |
| Connector |
Normal type: cable inlet 2-PF(G1/2〞)
Explosive proof: Protection jacket PF(G3/4〞) |
| Direct action |
Input signal increase, stem descend, valve close. |
| Reaction |
Input signal increase, stem ascend, valve open. |
| Input signal |
Input/output4～20mA.DC |
| Lag |
≤0.8%FS |
| Linear type |
≤+1%FS |
| Environmental temperature |
Standard type: -10℃～+60℃
With space heater : -35℃～+60℃
Explosive proof: -10℃～+40℃ |
| Electric temperature control valve Accessories |
Space heater (normal type)
Non-standard accessories, need special customized notes. |
