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 528959 is a Midi size industrial component from the D series, featuring a directly controlled diaphragm regulator design with a continuous compressed air supply and a rotary knob with detent actuator lock. It delivers constant output pressure with primary pressure compensation and secondary exhausting across an operating pressure range of 1 bar to 16 bar and a pressure regulation range of 0.5 bar to 12 bar, achieving a normal nominal flow rate of 3200 l/min. Designed for mounting in any position using accessories, this unit operates within a temperature range of -10 °C to 60 °C and weighs 1950 g. Submit the exact part number, quantity, and application requirements to receive 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 528959. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.