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 555781 is an industrial component featuring a width of 54 mm and a pneumatic vertical stacking pressure regulator for two reversible functions, built on the ISO 5599-2 norm with any mounting position. It provides constant output pressure with secondary exhausting, an inlet pressure of 0.5 bar to 10 bar (0.05 MPa to 1 MPa, 7.25 psi to 145 psi), and a pressure regulation range of 0.5 bar to 60 bar (0.05 MPa to 6 MPa, 7.25 psi to 870 psi). The unit operates with compressed air as per ISO 8573-1:2010 [7:4:4] allowing oil lubrication, weighs 1230 g, achieves IP65 and NEMA 4 protection, and mounts on a manifold sub-base or individual sub-base with an ambient temperature range of -5 °C to 50 °C. Submit the exact part number, quantity, and application requirements for 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 555781. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.