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 555771 is an industrial component featuring a width of 54 mm and compliance with ISO 5599-2, designed for pneumatic vertical stacking as a pressure regulator for port 1. It provides a constant output pressure with secondary exhausting across a regulation range of 0.05 MPa to 0.6 MPa (0.5 bar to 6 bar, or 7.25 psi to 870 psi) and supports an inlet pressure from 0.05 MPa to 1 MPa. The unit has an IP65 and NEMA 4 degree of protection, a product weight of 1190 g, and mounts on a manifold sub-base or individual sub-base in any mounting position. 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 555771. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.