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 173091 is an electrical 5/3 exhausted industrial component utilizing a piston slide design structure with a soft sealing principle and a positive overlap lap. Featuring an 17.8 mm width, an 18 mm grid dimension, a 5 mm nominal size, and a standard nominal flow rate of 500 l/min, this piloted valve operates at a working pressure ranging from 3 to 8 bar with internal pilot air supply and throttleable exhaust-air function. Additional technical attributes include a mechanical spring reset, non-reversible flow direction, internal assembly in any position, IP65 protection class, detenting manual override used with accessories, c UL us - Recognized (OL) authorization, and a CE symbol according to the EU low voltage guideline. Submit the exact part number, quantity, and application requirements to receive a formal quotation for this component.
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 173091. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.