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 546173 is a servo-controlled diaphragm valve featuring a 2/2-way, closed, monostable function with a soft sealing principle and a 25 mm nominal width. This electrical component utilizes in-line installation with a 3/4 NPT fitting connection, a preferred upright mounting position, and a non-reversible flow direction for compressed air, inert gas, water, and neutral liquids. Solenoid coil type MH-... provides electrical actuation and is ordered separately as an accessory. Submit the exact part number, quantity, and application requirements to receive 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 546173. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.