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 557601 is a 10 mm wide, directly controlled 2/2-way closed monostable industrial component featuring a hard sealing principle and non-reversible flow direction. Operating at 24V DC with an operating pressure range of 0.5 bar to 6 bar, this poppet valve without a return spring delivers a normal nominal flow rate of 100 l/min utilizing a pneumatic spring reset method. It holds IP55 protection, RCM compliance, and CE and UKCA markings as per EMC and RoHS directives, and requires a power supply unit capable of delivering at least 1.7 A without voltage drop for operation in any mounting position. Submit the exact part number, quantity, and application requirements to request 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 557601. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.