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 4451855 is a mechanical 3-way ball valve featuring a T-hole structural design with a soft sealing principle and an Rp1/2 fitting connection. The unit accommodates a nominal width DN of 15, an inside diameter of 14.1 mm, and a nominal pressure PN of 40, operating with media temperatures ranging from -20 °C to 130 °C. Designed for in-line installation in any mounting position, it handles compressed air, inert gas, water, and neutral liquids with a reversible flow direction and a 3/2 valve function based on EN 10226-1 and ISO 5211 norms. Submit the exact part number, quantity, and application requirements to receive a formal quotation.
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 4451855. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.