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. | 
 
               By Tony from Morocco - 2017.03.28 12:22
 By Tony from Morocco - 2017.03.28 12:22
               By Leona from Rio de Janeiro - 2018.11.06 10:04
 By Leona from Rio de Janeiro - 2018.11.06 10:04