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 3515640 is a manual 56 mm wide rotary vane industrial component featuring a 4/3 exhausted valve function with a normal nominal flow rate of 1500 l/min normalized to DIN 1343 and G1/4 pneumatic working ports. It operates within a 0 bar to 10 bar pressure range, supporting vacuum operation exclusively at connection 3 and requiring higher pressure at port 1 than at port 3 during dual pressure mode. This directly controlled, non-reversible device utilizes a hard sealing principle, an adjustable exhaust air function, an 8 mm nominal width, and is certified for ATEX Zone 2 and Zone 22 explosion prevention and protection. Operating media is restricted to compressed air per ISO 8573-1:2010 [7:4:4], with oil lubrication permitted and required for continued use. 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 3515640. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.