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 part number 8223997 is an industrial component featuring an exhaust air flow control non-return function with a QS-6 pneumatic connection 1 and a G1/4 pneumatic connection 2. Featuring manual actuation via a rotary knob with latch, this PBT-housed unit supports an operating pressure of 0.02 MPa to 1 MPa (0.2 bar to 10 bar, 2.9 psi to 145 psi) across an ambient temperature range of -10 °C to 60 °C, and holds ATEX certification for zones 1, 2, 21, and 22. Submit the exact part number, quantity, and application requirements to request a 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 8223997. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.