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 577518 is a 5/2-way bistable industrial component featuring electrical actuation and a 21 mm valve size. This piloted plate seat valve operates on 24V DC with an operating pressure range of 0.15 MPa to 1 MPa (1.5 bar to 10 bar) and delivers a normal nominal flow rate of 500 l/min through G1/8 pneumatic working ports. Built with IP65 protection using a plug socket, it includes adjustable exhaust air function, soft sealing, negative overlap lap, external pilot air supply, and both detenting and non-detenting manual override capabilities in any mounting position, backed by c UL us recognition. 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 577518. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.