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 size 4 industrial component from the MS series is a directly controlled diaphragm regulator featuring a constant output pressure, secondary exhausting, and a return flow characteristic. Operating within a pressure range of 0.8 bar to 14 bar and providing a normal nominal flow rate of 1000 l/min, this unit utilizes a rotary knob actuator lock with detent that can be closed with accessories. It accommodates compressed air per ISO 8573-1:2010 [7:4:4] or inert gases, maintains a moderate corrosion stress rating of CRC 2, and weighs 225 g with flexible mounting options including in-line installation, front panel mounting, or use with accessories. 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 8229687. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.