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 3540817 is an externally controlled industrial component featuring a poppet valve with a piston actuator, a soft sealing principle, and a 2/2-way, closed, monostable valve function with a 31 mm nominal width. This pneumatic device utilizes in-line installation with any mounting position, a G1 1/4 threaded sleeve connection per DIN ISO 228, and a non-reversible flow direction above the valve seat for gaseous media. It operates with a medium pressure of 0 MPa to 1.6 MPa, an operating pressure of 0.6 MPa to 1 MPa, and a medium temperature range of -40 °C to 200 °C using vapor, inert gas, or filtered compressed air. Submit the exact part number, quantity, and application requirements for a formal 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 3540817. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.