What is the solenoid valve features? Precision valve balancing and a short valve stroke translate to low solenoid actuation force over a short solenoid air gap, resulting in small, high flow, low wattage fast response solenoid valves.
1. Electric power reduction
A short current pulse is fed to open or close the valve and the electric power is reduced far enough to hold it in position. This helps in conserving energy.
2. Latching
Latching or pulse coil version provides a solution for applications with low frequency switching. The valve is energized by a short electric pulse to move the plunger. A permanent magnet is then used to keep the plunger in that position with no additional spring or magnetic field. This lowers power consumption and heat development in the valve.
3. High Pressure
High pressure versions are designed for pressure requirements up to 250 bar. The resilient seats are separate from the stroke control, resulting in high resistance to damage from shock and vibration. Media separation design allows isolation of the media from the valve’s working parts, making it a good solution for aggressive or slightly contaminated media.
4. Manual override
Optional manual override feature provides better safety and convenience during commissioning, testing, maintenance, and in case of a power failure. In some versions, the valve cannot electrically actuate when the manual control is locked. The time it takes the valve to open or close can be adjusted, typically by rotating screws on the valve’s body. This feature can help prevent a water hammer.
5. Vacuum
Valves that do not require a minimum pressure differential are suitable for rough vacuums. Universal direct acting or semi-direct acting solenoid valves are well suited for these applications. For more stringent leakage rate requirements special vacuum versions are available.
6. Low noise
Valves have a damped design to reduce the noise during the closing of the valve. The switching status of a solenoid valve can be indicated with an electrical or optical position feedback as a binary or NAMUR signal. NAMUR is a sensor output that indicates the on or off state of the valve.
