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Electric single seat control valve
Composed of valve body, valve seat, valve stem, guide sleeve, valve cover, seal packing and electric actuator. Electric single-seat regulating valve fluid channel into S-type, low pressure drop, flow, flow characteristics, high precision, adjustable range. It is one of the series of intelligent electric regulating valves. It is a high-performance electric single-seat regulating valve, suitable for fluids with different pressures and temperatures and occasions requiring high leakage. The electric actuator is an electronic integrated structure with a servo amplifier. The input control signal (4-20mADC or 1-5VDC) and the power supply can control the valve opening to reach the pressure, flow, level, temperature and other parameters. adjust. Electric single-seat control valve has the characteristics of sensitive action, simple connection, large flow, small size and high adjustment accuracy. Electric single seat regulator valve is widely used in electric power, metallurgy, petroleum, chemical, pharmaceutical, boiler, light industry and other industries in the automatic control system.
| Nominal diameter(DN) | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | |
| Valve seat diameter(dn) | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | |
| Rated flow coefficient(KV) |
straight line | 6.9 | 11 | 17.6 | 27.5 | 44 | 69 | 110 | 176 | 275 | 440 | 630 | 875 | 1250 |
| percentage | 6.3 | 10 | 16 | 25 | 40 | 63 | 100 | 160 | 250 | 360 | 570 | 850 | 1180 | |
| Allowable pressure difference(MPa) |
3.2 | 3.0 | 2.0 | 1.8 | 1.5 | 1.4 | 1.0 | 0.7 | 0.6 | 0.5 | 0.3 | 0.2 | 0.1 | |
| Nominal pressure(MPa) | 1.6、2.5、4.0、6.4、10.0 | |||||||||||||
| Rated route(mm) | 16 | 25 | 40 | 60 | 100 | |||||||||
| Valve cover type | Standard type(-17～+250℃)、High temperature type(+250～+450℃)、Low temperature type(-40～-196℃)、Bellows sealed type(-40～+350℃) | |||||||||||||
| Capping type | Bolt compression type | |||||||||||||
| Seal packing | V type PTFE packing、V type flexible graphite filler | |||||||||||||
| Valve core type | Single seat plunger valve core | |||||||||||||
| Flow characteristics | Linearity、percentage | |||||||||||||
| Configure Actuator series | 381L Series Electric Actuator、PSL series electric actuator | |||||||||||||
| Actuator parameters | voltage：220V/50Hz、input signal：4-20mAor1-5V·DC、output signal：4-20mA·DC | |||||||||||||
| Protection level：Equivalent toIP55、Separate explosion levels：ExdⅡBT4(ExdⅡBT6Special custom)、Hand operation function：handle | ||||||||||||||
| environment temperature：-25～+70℃、environment humidity：≤95% | ||||||||||||||
| item | standard | ||
| tolerance% | with3810L±2.5； withPSL±1.0 | ||
| difference% | with381L ±2.0； withPSL±1.0 | ||
| dead zone% | 1.0 | ||
| tolerance between start point and end point% |
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 route tolerance % | ≤2.5 | ||
| Leakage L/h | 0.01%×Valve rated capacity | ||
| Adjustable range R | 50：1 | ||
