Valves are used to control the vacuum as well as the compressed air. The right valves can increase both the process reliability and the cost-effectiveness of the vacuum system.
Valve Technology
Solenoid Valves
Highlights
- Control of vacuum, blow-off and venting of the suction cup
- Control of compressed air or vacuum in lines with smaller cross-sections
- Seat valve in robust metal housing
- Directly controlled
- 3/2-way valve (exception: EMV 3 is a 2/2-way valve)
- Switching function NO (exception: EMV 2 and EMV 3 are NC)
Benefits
- Suitable for vacuum and compressed air
- Short opening and closing times
- Control of on/off and venting functions
- Safety in the case of a power failure
Check Valves and Flow Restrictors
Highlights
- Check valve for applications where some of the suction cups may not be in contact with the workpiece
- Deactivation of unused suction cups, the system vacuum is maintained
- Handling of workpieces with varying sizes and shapes with the same gripper system
- Check valve in the form of a ball seat valve
- Reaction dependent on the volume flow rate
- Wide range of nominal sizes
- Available with male thread at the top (type SVK) or bottom (type SVKG)
Benefits
- Closing of vacuum lines leading to unused suction cups to maintain the system vacuum
- Low leakage rate which can be compensated with the aid of a bypass
- Also suitable for use in applications with high nominal flow rates
- Can be connected to all common suction cups and plates
Touch Valves
Highlights
- Touch valve for applications where some of the suction cups may not always be in contact with the workpiece
- Vacuum line to a suction cup is opened only if a workpiece is detected by a mechanical sensor
- May be installed in any orientation
- Touch valve with spring-loaded plunger
- Reaction is unaffected by the workpiece material
- Minimum size
Benefits
- The vacuum line is opened only if the suction cup is in contact with the workpiece (mechanical sensing)
- Can also be used for porous workpieces
- Also suitable for use in restricted spaces
Non Return Valves
Highlights
- Non-return valve for maintaining the vacuum in the case of a power failure or a failure of the vacuum generator
- Can also be used with energy-saving systems when handling non-porous materials
- May be installed in any orientation
- Seat-type non-return valve
- Wide range of nominal diameters
- Very small size
Benefits
- Closure of the vacuum line in order to maintain the system vacuum in the case, for example, of a power failure
- Very low to very high nominal flow rates possible
- Also suitable for use in restricted spaces
Manually Actuated Valves
Highlights
- Vacuum valve for manual switching of vacuum or compressed air circuits
- Robust construction permits high switching frequencies
- For use in vacuum gripping systems and handling devices
- May be installed in any orientation
- For use with vacuum and compressed air
- Wide range of nominal sizes
- Robust metal construction
- Small size
- Venting function
Benefits
- Absolutely vacuum-tight: no leaks
- Optimum matching to the nominal flow rate
- Robust and free of wear
- Space-saving and ergonomical
- Venting function for quick release of parts