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 173128 is an electrical 5/2 monostable industrial component featuring a piston slide design structure with a soft sealing principle and positive overlap. Engineered with a 17.8 mm width, 18 mm grid dimension, 5 mm nominal size, and 700 l/min standard nominal flow rate, this piloted valve operates within a working and pilot pressure range of 2.5 to 8 bar. Additional specifications include internal pilot air supply, mechanical spring reset, throttleable exhaust-air function, non-reversible flow direction, IP65 protection class, c UL us Recognized authorization, and an assembly position that can be set to any orientation with detenting manual override via accessories. Submit the exact part number, quantity, and application requirements to receive a formal quotation.
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 173128. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.