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 153444 is a nickel-plated brass non-return industrial component featuring an M5 pneumatic connection on port 1 and a QS-4 connection on port 2 with a screw-in mounting type. It delivers a normal nominal flow rate of 148 l/min under an operating pressure range of -1 bar to 10 bar using compressed air as per ISO 8573-1:2010 [7:-:-]. Designed with a minimum opening differential pressure of 0.1 bar and a closing differential pressure of 0.2 bar, this RoHS-compliant part weighs 7.2 g and supports oil-lubricated operation. Submit the exact part number, quantity, and application requirements to request a formal 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 153444. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.