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 rotary knob with detent actuator lock and an integrated pressure gauge. Operating within a pressure range of 0.8 bar to 14 bar and a regulation range of 0.3 bar to 7 bar, this unit delivers a normal nominal flow rate of 1150 l/min with constant output pressure, secondary exhausting, and return flow characteristics. It accommodates compressed air conforming to ISO 8573-1:2010 [7:4:4] or inert gases across ambient and medium temperatures from -10 °C to 60 °C, while maintaining a moderate corrosion resistance class of CRC 2 and a product weight of 225 g. Submit the exact part number, quantity, and application requirements to receive an RFQ.
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 8190234. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.