Confirm the exact configuration
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.
Global industrial sourcing · Houston, Texas info@mropartsrfq.com
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Festo
557650
Air solenoid valve VUVB-ST12-B52-ZH-QX-1T1
The Festo part number 557650 is a 24 mm electrical 5/2-way bistable poppet valve featuring a self-holding function, soft sealing principle, and non-detenting manual override. This piloted component provides a normal nominal flow rate of 260 l/min to 450 l/min, a nominal width of 4 mm, and a rapid changeover time of 10 ms with non-reversible flow direction and non-throttleable exhaust air. Operating at pressures from 2.8 bar to 8 bar with external pilot air supply across QS-4 and QS-6 pneumatic working ports, the assembly includes IP65 protection and supports mounting in any position. Submit the exact part number, quantity, and application requirements to receive a formal quotation.
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Request a QuoteWhy no listed price?
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
- 557650
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 557650.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
- Valve function
- 5/2-way, bistable
- Actuation type
- Electrical
- Valve size
- 24 mm
- Normal nominal ow rate (normalized to DIN 1343)
- 260 l/min...450 l/min
- Pneumatic working port
- QS-4 | QS-6
- Operating pressure
- 0.28 MPa...0.8 MPa | 2.8 bar...8 bar
- Structural design
- Poppet valve with self-holding function
- Degree of protection
- IP65
- Nominal width
- 4 mm
- Exhaust air function
- Cannot be throttled
- Sealing principle
- Soft
- Mounting position
- Any
- Manual override
- Non-detenting
- Type of control
- Piloted
- Pilot air supply port
- External
- Flow direction
- Non-reversible
- Information on operating pressure
- 0 – 0.8 bar with external pilot air | 0 - 8 bar with external pilot air
- Pilot pressure MPa
- 0.28 MPa...0.8 MPa
- Pilot pressure
- 2.8 bar...8 bar
- Changeover time
- 10 ms
- Duty cycle
- 100%
- Max. positive test pulse with 0 signal
- 800 µs
- Max. negative test pulse on 1 signal
- 300 µs
- Coil characteristics
- 24 V DC: 1.0 W
- Permissible voltage uctuations
- +/- 10%
- Operating medium
- Compressed air as per ISO 8573-1:2010 [7:4:4]
- Information on operating and pilot media
- Operation with oil lubrication possible (required for further use)
- Vibration resistance
- Transport application test with severity level 1 as per FN 942017-4 and | EN 60068-2-6
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 557650. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.