Solenoid valves serve as switching elements for the opening and closing of the valve assembly or act as safety control circuits for connected valve accessories to form the interface between the electric control level and the pneumatic actuator.
SAMSON solenoid valves are characterized by their high level of operational reliability and minimal power consumption. The Type 3969 Solenoid Valve also operates without consuming air and is a particularly energy-efficient solution.
SAMSON solenoid valves are available with either Whitworth pipe threads (G) or threads according to national pipe thread standards (NPT).
The hook-up consists of a pneumatic actuator with positioner, limit switch and solenoid valve for emergency venting of the actuator. The signal issued by the limit switch when the valve travel exceeds or falls below an adjusted limit can be used to activate the solenoid valve.
1 Solenoid valve – 2 Supply pressure regulator – 3 Control valve – 4 Positioner – 5 Limit switch
On/off applications can be implemented by a solenoid valve as the single mounted device on the valve assembly. An additional external power supply is not required for this hook-up since the air supply is fed internally to the solenoid valve.
1 Solenoid valve - 2 Supply pressure regulator - 3 Control valve
In combination with a positioner, the solenoid valve provides additional emergency shutdown to extend the control function of the valve assembly. In this case, the solenoid valve is connected directly upstream of the actuator.
In the event of emergency, the solenoid valve ensures that the actuator is vented and moves to the fail-safe position. In throttling service, an external pilot supply of the solenoid valve is always necessary.
1 Solenoid valve – 2 Supply pressure regulator – 3 Control valve – 4 Positioner
Together with valve accessories, pneumatic control valves serve as engineered solutions for special applications. SAMSON has been developing and manufacturing high-quality valves, actuators and valve accessories for over 100 years. Thanks to our experience and expertise as well as customer requirements, we have continuously developed the individual components and optimized their interaction.
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Jürgen van Santen
Phone: +49 69 4009-1571