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 9 pilot-controlled piston control valve from the MS series features constant output pressure with primary pressure compensation and secondary exhausting, operating within a pressure regulation range of 0.1 bar to 10 bar at an operating pressure of 6 bar to 11 bar. This component operates on a nominal DC voltage of 24 V (with a DC operating voltage range of 21.6 V to 26.4 V, 10% residual ripple, max. 4.2 W power consumption, and max. 0.16 A current consumption) controlled via a 4-20 mA analog input signal, supporting compressed air per ISO 8573-1:2010 [7:4:4] or inert gases without oil lubrication. Built with a maximum pressure hysteresis of 0.05 bar, CRC 2 moderate corrosion resistance, VDMA24364-B1/B2-L LABS conformity, and ISO 14644-1 Class 7 cleanroom suitability for any mounting position within a -10 °C to 60 °C storage temperature range. Submit the exact part number, quantity, and application requirements to request 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 8203865. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.