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Festo
557377
Soft-start valve VABF-S6-1-P5A4-G12-4-1-P
The Festo 557377 is a piloted piston gate valve based on the ISO 5599-2 norm featuring electrical actuation, a soft sealing principle, and a mechanical spring reset method. It operates within a pressure range of 0.2 MPa to 1.2 MPa (2 bar to 12 bar) with a switchover pressure presetting of 0.4 MPa, utilizing internal pilot air supply and supporting a non-reversible flow direction with a pressurization valve function. This component incorporates both detenting and electrical self-resetting manual overrides, N.O. contact switching element function, and switching position sensing with a sensor, while withstanding severity level 2 vibration and shock resistance as per FN 942017-4, FN 942017-5, EN 60068-2-6, and EN 60068-2-27 standards. Submit the exact part number, quantity, and application requirements to request a quote for this item.
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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
- 557377
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 557377.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
- Max. positive test pulse with 0 signal
- 2500 µs
- Max. negative test pulse on 1 signal
- 1400 µs
- Vibration resistance
- Transport application test with severity level 2 as per FN 942017-4 and | EN 60068-2-6
- Shock resistance
- Shock test with severity level 2 as per FN 942017-5 and EN 60068-2-27
- Based on norm
- ISO 5599-2
- Actuation type
- Electrical
- Sealing principle
- Soft
- Mounting position
- Any
- Manual override
- Detenting | Self-resetting via electrical control signal
- Structural design
- Piston gate valve
- Reset method
- Mechanical spring
- Type of control
- Piloted
- Pilot air supply port
- Internal
- Flow direction
- Non-reversible
- Valve function
- Pressurization function
- Switching element function
- N.O. contact
- Note on forced dynamization
- Switching frequency at least once a month
- Switching position sensing
- Switching position with sensor
- Operating pressure
- 0.2 MPa...1.2 MPa | 2 bar...12 bar
- Switchover pressure presetting
- 0.4 MPa
- Standard nominal ow rate pressurization
- 3000 l/min
- Standard nominal ow rate exhaust air
- 3300 l/min
- Nominal operating voltage DC
- 24 V
- Coil characteristics
- 24 V DC: 2.5 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)
- Corrosion resistance class (CRC)
- 0 - No corrosion stress
- LABS (PWIS) conformity
- VDMA24364-B1/B2-L
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 557377. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.