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 4165859 is a 20 mm wide piston gate valve featuring a 5/3 exhausted valve function and manual actuation with a mechanical spring reset. This direct-controlled component delivers a normal nominal flow rate of 530 l/min through G1/8 pneumatic working ports across an operating pressure range of -0.95 bar to 10 bar. Designed with an adjustable exhaust air function, soft sealing principle, and positive overlap lap, it supports a reversible flow direction and a maximum switching frequency of 0.5 Hz for compressed air media conforming to ISO 8573-1:2010 [7:-:-]. Certified for ATEX Zone 1, Zone 2, Zone 21, and Zone 22 explosion prevention and protection, this unit features any mounting position and permits oil lubrication operation. Submit the exact part number, quantity, and application requirements for an RFQ 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 4165859. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.