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.
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Festo
190850
Non return valve HA-1/8-QS-1/4-U
The Festo part number 190850 is a brass industrial component featuring a non-return valve function with a 1/8 NPT pneumatic connection 1 and a QS-1/4 pneumatic connection 2. This screw-in component operates within a pressure range of -1 bar to 10 bar and an ambient temperature range of 0 °C to 60 °C, delivering a normal nominal flow rate of 313 l/min for compressed air as per ISO 8573-1:2010 [7:-:-]. It requires a minimum opening differential pressure of 0.1 bar, a minimum closing differential pressure of 0.2 bar, and permits oil lubrication operation. Submit the exact part number, quantity, and application requirements to request a 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
- 190850
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 190850.
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
- Non-return function
- Pneumatic connection 1
- 1/8 NPT
- Pneumatic connection 2
- QS-1/4
- Type of mounting
- Screw-in
- Normal nominal ow rate (normalized to DIN 1343)
- 313 l/min
- Operating pressure
- -1 bar...10 bar
- Ambient temperature
- 0 °C...60 °C
- Housing material
- Brass
- Operating medium
- Compressed air as per ISO 8573-1:2010 [7:-:-]
- Min. differential pressure, opening
- 0.1 bar
- Min. differential pressure, closing
- 0.2 bar
- Information on operating and pilot media
- Operation with oil lubrication possible (required for further use)
- LABS (PWIS) conformity
- VDMA24364-B1/B2-L
- Product weight
- 21 g
- Note on materials
- RoHS compliant
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 190850. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.