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 543540 is an ISO 15407-1 compliant industrial component featuring an 18 mm width and a pneumatic vertical stacking pressure regulator for ports 2 and 4 that is reversible. It provides a constant output pressure with secondary exhausting, an inlet pressure range of 0.5 bar to 10 bar, and a pressure regulation range of 0.05 MPa to 0.6 MPa (0.5 bar to 6 bar or 7.25 psi to 87 psi). Built with an IP65 and NEMA 4 degree of protection, a 245 g product weight, and CRC 0 corrosion resistance, this unit operates on compressed air per ISO 8573-1:2010 [7:4:4] across an ambient temperature range of -5 °C to 50 °C. Submit the exact part number, quantity, and application requirements for an RFQ 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 543540. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.