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The advantages of electric single seat control valve

Writer:condiDate:2017-3-2 09:55
■ Electric single seat control valve product overview
ZDLP (M) electronic small single-seat (sleeve) control valve, from low flow resistance through a single seat or low flow resistance sleeve valve with the German imports PSL series straight trip electric actuator (also optional domestic 3810, 3410 series of implementing agencies). (4-20mADC or 1-5VDC) and single-phase power supply to control the operation, to achieve the pressure, flow, temperature, liquid level and other parameters of the regulation, no need to use the servo amplifier, input control signal The
■ electric single-seat control valve product features
ZDLP (M) electronic small electric single seat (sleeve) control valve has a small size, light weight, large flow, simple wiring, high precision adjustment. Widely used in electric power, petroleum, chemical, metallurgy, environmental protection, teaching and research equipment industries such as industrial automation control system.
■ electric single seat control valve main technical data
1, the valve body
Body type: straight down S casting valve
Nominal diameter: DN20-200 (mm)
Nominal pressure: 1.6-6.4MPa
Connecting flange:
JB / T74-90 JB / T79.2-94 concave type
Body material: ZG270-500, stainless steel
2, on the valve cover
Room temperature: -40 ℃ ~ +200 ℃
Cooling type: +200 ℃ ~ +450 ℃
Low temperature type: -250 ℃ ~ -100 ℃
Bellows seal type: -10 ℃ ~ +450 ℃
Gland form: Bolt compression type
Filler: V-type PTFE
Flexible graphite packing
Preparation of asbestos packing
3, the valve components
Spool form: Upper guide single seat plunger spool
Upper guide single seat sleeve plunger spool
Flow characteristics:
Equal percentage characteristics, linear, quick open
Material: 1Cr18Ni9Ti, 0Cr18Ni12Mo2Ti
■ Electric single seat control valve electric actuator
PSL electric actuator is the German PSAutomationGmbH actuator manufacturer launched the product. With the integrated structure design, position transmitter and servo amplifier as two separate components can be directly into the actuator, directly accept the control signal (4-20mADC or 1-5VDC), the output 4-20mADC valve position feedback signal. Built-in PSAP4 intelligent controller, the LCD panel to display the input signal value as a percentage, the valve position display and fault information values, manual key setting parameters, zero and full bit auto-tuning function, fault self-diagnosis and alarm function. Can be set to adjust the section, can be a signal generator output dual time proportional signal control two electric actuators (4-12mA control PSL1 adjustment; 12-20mA control PSL2 adjustment).
Actuator and the valve connection using flexible coil spring connection, to avoid the stem and the output shaft to the different shaft to the impact of the valve can be preset to ensure that the valve off the reliable, to prevent leakage.
PSL electric actuator technical parameters:
1, power supply: AC220VAC; power consumption: 5VA; switching capacity: 150VA (24V50VA); protection class: IP65
2, the input signal: 4-20mADC or 1-5VDC; output signal: 4-20mADC
3, the input impedance: 250Ω; Output impedance: ≤ 650Ω; Insulation resistance: the main circuit - Control circuit: 100MΩ (500VDC)
4, Insulation resistance: Control circuit - Output circuit: 100MΩ (500VDC); Output circuit - Main circuit: 100MΩ (500VDC)
5, repeatability: ± 1%; sensitivity: ± (0.5-5%) FS; lag: 50% sensitivity

TypeInfo: Technical Articles

Keywords for the information:Electric single seat control valve  Advantages of regulating valves  Regulating valve