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Festo
543253
Piloted non return valve HGL-1/8-1/8-B
The Festo 543253 is a pneumatic industrial component featuring an unlockable check valve function, G1/8 pneumatic connections 1 and 2, and a G1/8 pilot air port 21. This screw-in component operates within a pressure range of 0.05 MPa to 1 MPa (0.5 bar to 10 bar) and supports a pilot pressure of 0.2 MPa to 1 MPa (2 bar to 10 bar / 29 psi to 145 psi). Designed for compressed air operating media compliant with ISO 8573-1:2010 [7:4:4], it delivers a standard flow rate 1->2 (6-0) of 430 l/min and a standard nominal flow rate 1->2 (6-5) of 300 l/min across any mounting position in ambient temperatures between -10 °C and 60 °C. Submit the exact part number, quantity, and application requirements for a quote.
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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
- 543253
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 543253.
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
- Unlockable check valve function
- Pneumatic connection 1
- G1/8
- Pneumatic connection 2
- G1/8
- Pilot air port 21
- G1/8
- Actuation type
- Pneumatic
- Type of mounting
- Screw-in | With external thread
- Operating pressure
- 0.05 MPa...1 MPa | 0.5 bar...10 bar
- Pilot pressure MPa
- 0.2 MPa...1 MPa
- Pilot pressure
- 2 bar...10 bar
- Pilot pressure psi
- 29 psi...145 psi
- Ambient temperature
- -10 °C...60 °C
- Operating medium
- Compressed air as per ISO 8573-1:2010 [7:4:4]
- Maritime classication
- See certicate
- Mounting position
- Any
- Standard ow rate 1->2 (6-0)
- 430 l/min
- Standard nominal ow rate 1->2 (6-5)
- 300 l/min
- Information on operating and pilot media
- Operation with oil lubrication possible (required for further use)
- Corrosion resistance class (CRC)
- 2 - Moderate corrosion stress
- LABS (PWIS) conformity
- VDMA24364-B2-L
- Cleanroom suitability, measured according to ISO 14644-14
- Class 4 according to ISO 14644-1
- Storage temperature
- -10 °C...60 °C
- Temperature of medium
- -10 °C...60 °C
- Pilot medium
- Compressed air as per ISO 8573-1:2010 [7:4:4]
- Nominal tightening torque
- 3.5 Nm
- Tolerance for nominal tightening torque
- ±10%
- Product weight
- 26.2 g
- Note on materials
- RoHS compliant
- Seals material
- NBR
- Hollow bolt material
- Wrought aluminum alloy | Anodized
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 543253. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.