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
Engineered by Festo, part number 8141658 is a pneumatic proportional 3/3-way valve utilizing a sub-base, diaphragm, and pilot-controlled piston poppet structural design with a soft sealing principle. Operating within a pressure range of 0.14 MPa to 0.8 MPa (1.4 bar to 8 bar / 20.3 psi to 116 psi) and a temperature span of -40 °C to 80 °C, this single-acting component delivers a normal nominal flow rate of 1240 l/min with a mechanical spring reset. The smooth-anodized wrought aluminum alloy housing features a 20 µm coating, supports any mounting position with accessories, and accommodates compressed air as per ISO 8573-1:2010 [7:7:-] or inert gases without oil lubrication. 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 8141658. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.