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Festo
173178
Pneumatic valve VL-5/3E-5,0-B
The Festo 173178 is a 17.8 mm wide pneumatic industrial component featuring a 5/3 exhausted valve function with a piston slide design and soft sealing principle. It delivers a standard nominal flow rate of 350 l/min across a working pressure range of -0.9 to 10 bar, utilizing direct piloting with an external pilot air supply and a pilot pressure of 3 to 8 bar. This UL-recognized unit incorporates a mechanical spring reset, positive overlap lap, throttleable exhaust-air function, and reversible flow direction in an 18 mm grid dimension with any assembly position. Submit the exact part number, quantity, and application requirements to receive a quote.
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Request a Quote- Manufacturer
- Festo
- Part number
- 173178
- Data verification
- Manufacturer evidence reviewed
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Exact part-number verificationTechnical properties are matched to 173178.
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Verified configuration
Technical Specifications
- Valve function
- 5/3 exhausted
- Type of actuation
- pneumatic
- Width
- 17.8 mm
- Standard nominal flow rate
- 350 l/min
- Working pressure
- -0.9 ... 10 bar
- Design structure
- Piston slide
- Type of reset
- mechanical spring
- Authorization
- UL - Recognized (OL)
- Nominal size
- 5 mm
- Grid dimension
- 18 mm
- Exhaust-air function
- throttleable
- Sealing principle
- soft
- Assembly position
- Any
- Manual override
- None
- Type of piloting
- direct
- Pilot air supply
- external
- Flow direction
- reversible
- Lap
- Positive overlap
- Pilot pressure
- 3 ... 8 bar
- b value
- 0.5
- C value
- 1.54 l/sbar
- Switching time off
- 22 ms
- Switching time on
- 6 ms
- Operating medium
- Compressed air in accordance with ISO8573-1:2010 [7:4:4]
- Note on operating and pilot medium
- Lubricated operation possible (subsequently required for further | operation)
- Vibration resistance
- Transport application test at severity level 1 in accordance with FN | 942017-4 and EN 60068-2-6
- Shock resistance
- Shock test with severity level 2 in accordance with FN 942017-5 and EN | 60068-2-27
- Corrosion resistance classification CRC
- 2 - Moderate corrosion stress
- Storage temperature
- -20 ... 40 °C
- Medium temperature
- -5 ... 50 °C
- Sound pressure level
- 75 dB(A)
- Pilot medium
- Compressed air in accordance with ISO8573-1:2010 [7:4:4]
- Ambient temperature
- -5 ... 50 °C
- Product weight
- 85 g
- Mounting type
- On subbase
- Pilot air port 12
- Subbase
- Pilot air port 14
- Subbase
- Pneumatic connection, port
- 1 Subbase
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 173178. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.