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 173051 is an electrical industrial component featuring a 5/3 closed valve function and a piston slide design structure with a soft sealing principle. It has 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 operating at a working pressure of 3 to 8 bar. This piloted unit utilizes internal pilot air supply, mechanical spring reset, non-reversible flow direction, throttleable exhaust-air function, freedom from overlap, and an IP65 protection class with c UL us recognition. Submit the exact part number, quantity, and application requirements to request a quote 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 173051. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.