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
This Festo industrial component, part number 564839, features an exhaust air flow control non-return function with a manual slotted screw adjusting element and a screw-in external thread mounting type. It provides a pneumatic connection 1 of QB-1/8 and pneumatic connection 2 of 10-32 UNF-2A, utilizing a nickel-plated brass screwed plug with a maximum tightening torque of 1.1 ft-lbf and a product weight of 0.3 oz. The unit operates within a temperature range of 32 °F to 140 °F and an operating pressure range of -13.8 psi to 116 psi using compressed air as per ISO 8573-1:2010 [7:4:4], supporting a standard nominal flow rate of 8.39 cfm in the flow control direction and 6.51 cfm to 8.57 cfm in the non-return direction. 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 564839. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.