A vacuum switch opens an electrical contact when certain fluid pressure is reached. The vacuum switch opens or closes the connections when the pressure reaches the set-point or reset-point, preventing a system from being under or overpressured.
PVL sells mechanical vacuum switches (solid state). There are three primary contact configurations for mechanical vacuum switches: normally open (NO), normally closed (NC), and changeover (Single Pole, Double Throw or SPDT).
A diaphragm or a piston opens or shuts a circuit when the pressure reaches the set-point or drops to the reset-point.
A hex key or spinning knob is often used to adjust the setting pressure of a mechanical vacuum switch. A digital display may be used to change the set-point and reset-point of an electrical vacuum switch. The disparity between the switch point and the reset point is referred to as hysteresis. The manufacturer often sets mechanical vacuum switch hysteresis, but electronic pressure vacuum hysteresis is typically adjustable.
Vacuum Switch Selection Criteria
Our vacuum switches come in a range of housing materials and seals. When choosing a material, the media and temperature range are critical factors.
When selecting a vacuum switch, consider the maximum overpressure, degree of ingress protection, ATEX approvals, resistance to vibration and shock, process connections, switch capacity, and type of electrical connection.
Vacuum Switch Applications
Popular applications for vacuum switches include:
- Air compressors
- Electric heaters
- Engine fluid systems
- Floor cleaning equipment
- Boilers
- Transmission systems
- Vacuum pumps
One of the most common industries that use vacuum pressure switches is hydraulics. Controlling pressure build-up is key for maintaining hydraulic equipment since vacuums are essential in hydraulics.
Hydraulics are often used in mechanical systems that lift, push, or pull large objects. They employ a pump that draws liquid into it, generating a vacuum at the input. When the pressure is increased, fluid is forced into the intake, causing the hydraulic equipment to move. Managing pressure and vacuum is crucial for avoiding sudden pressure fluctuations that might cause the whole hydraulic arm or lever to collapse.
Hydraulics may be found in vehicle production plants, construction machines, and amusement park rides. They're also useful for more ordinary goods like office chairs. No matter where hydraulics are used, they must operate at the appropriate pressure for the loads they are typically responsible for handling.
PVL Vacuum Switches
Pressure Vacuum Level Ltd has been selling high-quality vacuum switches for over 28 years. PVL provides these devices for various industries.
Don't hesitate to contact us if you have any questions about our vacuum switches or other products.
Other Products
PVL customers can rely on us for high-quality products. Vacuum Switches are only a handful of the products we provide customers across the United Kingdom. We are also a significant supplier of Pressure Switches and Transducers.
