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.

Festo
The Festo 190857 is an industrial brass component featuring a non-return valve function with a QS-5/32 pneumatic connection 1 and a 10-32 UNF-2A pneumatic connection 2 for screw-in mounting. This part operates within a pressure range of -1 bar to 10 bar, an ambient temperature of 0 °C to 60 °C, and delivers a normal nominal flow rate of 145 l/min using compressed air according to ISO 8573-1:2010 [7:-:-]. Weighing 7.2 g with RoHS-compliant materials, it requires a minimum opening differential pressure of 0.1 bar and closing differential pressure of 0.2 bar, supporting oil lubrication operation and VDMA24364-B2-L LABS conformity. Submit the exact part number, quantity, and application requirements for a formal quote.
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.
For a faster response, include quantity, condition, and delivery destination.
Verified configuration
Engineering context
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.
Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.
Our sourcing response is prepared against Festo 190857. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.