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 part number 609555 is an industrial component utilizing a thermal heat transfer measuring principle to monitor mass flow and volumetric flow rate in a unidirectional flow direction. It operates within a flow measuring range of 4 l/min to 200 l/min at operating pressures from -0.9 bar to 10 bar, accommodating argon, nitrogen, and compressed air complying with ISO 8573-1:2010 [6:4:4] within a medium and ambient temperature range of 0 °C to 50 °C. This RoHS-compliant unit carries RCM, c UL us-Listed (OL), CE, and UKCA markings, fulfilling EU and UK directives for EMC and RoHS. Please 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 609555. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.