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Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.
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Festo
540021
Vacuum generator OVEM-05-H-B-QO-CE-N-1P
The Festo part number 540021 is a modular industrial component featuring a 0.45 mm nominal width Laval nozzle, a 20 mm width dimension, an open-type muffler, and a non-detenting manual override for any mounting position. It incorporates an electric ejector pulse valve, a flow control valve, an electric on-off valve, a filter, a check valve, an open muffler, and a piezoresistive vacuum switch measuring relative pressure with a threshold value comparator, fixed hysteresis, and an N.O. contact switching element function. Additional electrical features include short-circuit protection, reverse polarity protection for all connections, IEC 61131-2 switching inputs, LED display and switching position indication, and teach-in setting options supporting high vacuum and standard ejector characteristics with 40 µm filtration. Submit the exact part number, quantity, and application requirements to receive a formal quotation for this component.
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Industrial and obsolete parts are priced per enquiry: the final price depends on available stock, condition, quantity, and your delivery destination, so a fixed list price would be misleading. Request a quote and we confirm current pricing, lead time, and sourcing options — including hard-to-find and discontinued Festo references — within one business day.
- Manufacturer
- Festo
- Part number
- 540021
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 540021.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
- Nominal width of Laval nozzle
- 0.45 mm
- Width dimension
- 20 mm
- Muffler construction type
- Open
- Mounting position
- Any
- Ejector characteristics
- High vacuum | Standard
- Grade of ltration
- 40 µm
- Manual override
- Non-detenting
- Integrated function
- Ejector pulse valve, electric | Flow control valve | Electric on-off valve | Filter | Check valve | Muffler open | Vacuum switch
- Structural design
- Modular
- Short-circuit protection
- Yes
- Measured variable
- Relative pressure
- Measuring principle
- Piezoresistive
- Switching element function
- N.O. contact
- Switching function
- Threshold value comparator | Threshold value with xed hysteresis
- Valve function
- Closed
- Reverse polarity protection
- for all electrical connections
- Switching input to standard
- IEC 61131-2
- Display type
- LED
- Setting options
- Teach-in
- Switching position indication
- LED
- Switching status indication
- Optical
- Setting range threshold value
- -1 bar...0 bar
- Operating pressure
- 2 bar...8 bar
- Operating pressure for max. vacuum
- 5.1 bar
- Max. vacuum
- 93 %
- Nominal operating pressure
- 6 bar
Engineering context
Identification and RFQ Guidance
What to include in your RFQ
Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.
Technical verification
Our sourcing response is prepared against Festo 540021. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.