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 543539 is an industrial component featuring a width of 26 mm based on the ISO 15407-1 norm and a product weight of 430 g for mounting in any position on a manifold sub-base or individual sub-base. It functions as a pneumatic vertical stacking pressure regulator for ports 2 and 4, providing a constant output pressure with secondary exhausting across a regulation range of 0.2 MPa to 0.85 MPa (2 bar to 8.5 bar, or 29 psi to 123.25 psi) given an inlet pressure 1 of 0.5 bar to 10 bar. Operating with compressed air as per ISO 8573-1:2010 [7:4:4] and allowing for oil lubrication, this RoHS-compliant unit achieves an IP65 and NEMA 4 degree of protection within an ambient temperature range of -5 °C to 50 °C. Submit the exact part number, quantity, and application requirements for 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 543539. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.