ZRL Type Electric Control Valve

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Products description:
Electric control valve consists of two parts-- 38110L or 9610L type electric actuator and single inner valve assembly. There is a servo amplifier in the 3810L type electric actuator, it receives standard signal 4~20mA (D.C). The actuator is the drive device. Its drive force is the electric power. So the motor can bring along the decelerator to produce axial thrust. The axial thrust makes the core of the valve move. In that case, the thrust is outputted. The valve is the regulating device. It contacts directly with the medium to adjust its flow rate. The valve body is of compact structure. The fluid flow passage is S-type. The depressurization loss is low. The flow rate is large. The measuring range is wide. The accuracy of the flow curve is high. It accords with IEC534-1-1976 standard. The guide area of the core of the valve is wide. The vibration resistance is good. The leakage of the valve seat meets ANST B16.106. The valve is widely used in chemical, petroleum, metallurgy, power plants and other industrial sectors.
   The actuator is the drive device, and its drive force is the electric power. The valve is the regulating device. It contacts directly with the medium to adjust its flow rate.  
   ZDLP single-seat valve adopts a sealing face. So the leakage rate is small. But the unbalanced push power, acted on the valve rod, is strong. It is used in the working condition of minor pressure differential. ZDLM cage valve adopts balanced valve plug. The unbalanced push power, acted on the valve rod, is weak. So it is allowed to be used in the working condition of large pressure differential. Compared with the single-seat control valve, the valve plug of the cage valve has better stability. And it is not easy to vibrate. But the leakage rate is larger. This king of the valve is widely used in chemical, petroleum, metallurgy, power plants and other industrial sectors.


Main Technical Parameters and Performance Index:
Nominal pressure:1.6, 2.5, 4.0, 6.4, 10.0MPa(16、25、40、64、100kg/cm2)
body material: cast iron, cast steel, cast stainless steel
inherent flow characteristic:straight line, Equal percent
mode of action: power open type, power off type
Temperature range: -20~200℃ (normal temperature), -40~450℃ (intermediate temperate), -250~-60℃ (low temperature)
Allow leakage: ZDLP type: ≤ 1 X 10-4 valve rated flow
ZDLM type: ≤ lXl0-3 valve rated flow
Input signal: 4~20mA (D.C)
Resolution: <0.4%
Power supply voltage: AC220V 50Hz
Environment temperature: -10 ~ 600 ℃
Environment gas: non-corrosive gases
Relative Humidity: common type is less than 95%
the flameproof is of 45 ~ 85%
Allows vibration: less than 1.5G