Auxiliary Equipments for Control Valves

Pneumatic relay Model VF04

Model No.
VF04
VF04
Discontinued products

Automatically switches the air supply line based on the balance between the signal air pressure and the spring, which can be set in advance to any position.

  • Compact and lightweight three-way pilot relay
Structural drawing
VF04
Valve typePneumatic relay
Model No.VF04
Input signal490kPa {5kgf/cm²} or less
Stroke range20 to 98kPa {0.2 to 1.0kgf/cm²} [MAX.250kPa {2.6kgf/cm²}]
Air supply pressure40 to 80kPa {0.4 to 0.8kgf/cm²}
Ambient temperature-30 to +80°C
FeaturesCombines 3-way on/off valve used to switch signal air lines based on balance between supply pressure on upper diaphragm and force of preset spring
View specs for model VF04

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Related information
VF02
Air lock relay Model VF02
If the air supply device fails and the pressure fluctuates, the signal air pressure supplied to the control valve is automatically maintained at the state just before the pressure fluctuation, and the degree of opening of the control valve is maintained.
VF03
Pneumatic relay (with manual reset) Model VF03
Automatically switches the air supply line based on the balance between the signal air pressure and the spring, which can be set in advance to any position.