Descripción

Proportional control valve »posiflow«, for air / gas, 24 V DC, NC, G 3/8, DN 7.1, Operating pressure difference max. 1 bar. For electronic flow control.For all applications where the flow rate of a liquid or gas has to be controlled.The valve features a special magnet armature and is characterised by low friction and a high dynamic response.If the valve is combined with a plug amplifier:The maximum / minimum current and frequency can be adjusted by means of integrated potentiometers.A current ramp can also be connected and adjusted with a potentiometer.This facilitates a slow change in the flow rate, even if the setpoint changes suddenly.If the setpoint is < 200 mV (< 0.4 / 4.4 mA), the piloting current is completely switched off, causing the valve to be de-energised (tightly closed function).We recommend combining these proportional valves with a plug amplifier.Benefits:- Compact and economical- Integrated temperature compensation- Precise control- Optimised flow with no water hammer- Ramp function assures a smooth response to step changes in the input signal- Disconnect function
A [mm]85.0
B [mm]48.0
C [mm]97.0
DN 7.1
Failsafe behaviour Tight closure in case of loss of voltage
Housing Brass
Internal parts Stainless steel
Max. ambient temperature [°C]75
Max. medium temperature [°C]90
Max. operating pressure difference [bar]1.0
Medium Air, neutral gases, water, oil
Min. ambient temperature [°C]-10
Min. medium temperature [°C]-10
Page No. HK186
Piloting Via plug amplifier 0 to 10 V, 0 to 20 mA, 4 to 20 mA
Pressure range Vacuum to 8 bar
Sealant FKM
Thread G 3/8
Valve disc FKM
Valve seat Brass
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