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 4165861 is a 20 mm wide, 3/2-way bistable industrial component featuring a plate seat structural design and soft sealing principle for direct, manual actuation with a detenting manual override. This valve provides a normal nominal flow rate of 750 l/min through G1/8 pneumatic working ports, an adjustable exhaust air function, a nominal width of 5.6 mm, zero overlap lap, and reversible flow direction within an operating pressure range of -0.95 bar to 10 bar. Certified for ATEX Zone 1, Zone 2, Zone 21, and Zone 22 explosion prevention and protection, it operates on compressed air meeting ISO 8573-1:2010 [7:-:-] standards in any mounting position at a maximum switching frequency of 0.5 Hz, allowing oil lubrication if required for further use. Submit part number 4165861, quantity, and application requirements to receive an official 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 4165861. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.