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
Reference imageConfirm configuration by manufacturer part number.
Festo
34878
Piloted non return valve HGL-1/4-NPT
The Festo 34878 is an industrial component featuring an unlockable check valve function, 1/4 NPT pneumatic connection 1, 1/4 NPT pneumatic connection 2, and a screw-in mounting type. Operating within a pressure range of 0.03 MPa to 1 MPa (0.3 bar to 10 bar) and pilot pressure ranging from 0.18 MPa to 1 MPa (1.8 bar to 10 bar / 26.1 psi to 145 psi), it delivers a normal nominal flow rate from 0 l/min to 490 l/min normalized to DIN 1343. Constructed with NBR seals, RoHS-compliant materials, and VDMA24364-B1/B2-L LABS conformity, the unit functions with compressed air as per ISO 8573-1:2010 [7:4:4] across a medium and ambient temperature range of -20 °C to 80 °C, supporting oil lubrication for operation. Submit the exact part number, quantity, and application requirements to receive a formal quote.
Request pricing and availabilityCommercial response within one business day for your destination and required quantity.
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
- 34878
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 34878.
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
- 1/4 NPT
- Pneumatic connection 2
- 1/4 NPT
- Type of mounting
- Screw-in
- Normal nominal ow rate (normalized to DIN 1343)
- 0 l/min...490 l/min
- Operating pressure
- 0.03 MPa...1 MPa | 0.3 bar...10 bar
- Pilot pressure MPa
- 0.18 MPa...1 MPa
- Pilot pressure
- 1.8 bar...10 bar
- Pilot pressure psi
- 26.1 psi...145 psi
- Ambient temperature
- -20 °C...80 °C
- 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)
- LABS (PWIS) conformity
- VDMA24364-B1/B2-L
- Temperature of medium
- -20 °C...80 °C
- Note on materials
- RoHS compliant
- Seals material
- NBR
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 34878. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.