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 4503 is a 5/2-way bistable industrial component featuring a plate seat structural design, a nominal width of 2.5 mm, and a normal nominal flow rate of 105 l/min. Operating at a pressure range of 1 bar to 8 bar with a 9 ms changeover time, this unit utilizes PK-3 pneumatic working ports for connections 1 through 5 and functions with compressed air conforming to ISO 8573-1:2010 [7:-:-]. Constructed with NBR seals and a brass and PPS-reinforced sub-base, the 130 g device supports mounting via through-hole, sub-base, or mounting frame while maintaining VDMA24364-B1/B2-L LABS conformity and RoHS compliance across an ambient temperature range of 0 °C to 60 °C. Submit the exact part number, quantity, and application requirements to receive 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 4503. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.