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 537603 is an electrical 3/2 closed, monostable industrial component utilizing a piston slide design structure with a 20 mm valve size and a 7 mm nominal size. It features a standard nominal flow rate of 500 l/min, a working pressure range of -0.9 to 8 bar, an air spring reset, and a soft sealing principle with an IP65 protection class. Operating with external pilot air supply at 2 to 8 bar pilot pressure, the unit achieves 20 ms switching times for both on and off states via a 24 V DC, 1.5 W characteristic coil. Submit the exact part number, quantity, and application requirements for 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 537603. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.