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 165666 is an industrial component featuring a one-way flow control function for exhaust air with M5 pneumatic connections and a slotted head screw adjusting element for threaded mounting. It operates within a working pressure of 0.2 to 10 bar, an ambient and medium temperature range of -10 to 60 °C, and accommodates filtered compressed air with 40 µm filtration, utilizing a nickel-plated screw-in stud, NBR seals, and a wrought aluminum alloy regulating screw. This unit weighs 10 g, delivers a standard nominal flow rate of 83 l/min in the flow control direction, and holds Germanischer Lloyd authorization. Submit the exact part number, quantity, and application requirements for 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 165666. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.