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 537221 is an MS-series size 4 industrial component utilizing a fiber filter structural design with a 0.01 µm filtration grade and 99.9999% filter efficiency for compressed air and inert gases. It operates within a pressure range of 0.2 MPa to 1.2 MPa, handles a standard flow rate from 54 l/min to 360 l/min, and features an integrated metal bowl guard with a 25 ml maximum condensate volume and fully automatic or manual non-detenting condensate drains. 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 537221. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.