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 8191851 is a 3-way ball valve featuring a quarter turn pneumatic actuator, soft sealing principle, and an Rp1 1/2 fitting connection. Built for in-line installation in any mounting position, this DN 40 component operates within a pressure range of 0.55 MPa to 0.8 MPa and handles medium temperatures from -10 °C to 200 °C with a Kv flow rate of 33.2 m³/h. The unit conforms to EN 10226-1 and ISO 5211 standards, utilizing an F0405 flange hole pattern and supporting reversible flow with a 3/2 valve function. 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 8191851. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.