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 546821 is an ISO 5599-1 compliant industrial component featuring a 42 mm width and a product weight of 640 g for pneumatic vertical stacking as a pressure regulator for port 2. It delivers a constant output pressure with secondary exhausting across a regulation range of 0.1 MPa to 0.6 MPa (1 bar to 6 bar / 14.5 psi to 87 psi) and accepts an inlet pressure of 0.05 MPa to 1 MPa (0.5 bar to 10 bar / 7.25 psi to 145 psi). Designed with IP65 and NEMA 4 protection for ambient temperatures from -5 °C to 50 °C, this unit mounts on a manifold or individual sub-base in any position using compressed air as per ISO 8573-1:2010 [7:4:4] with oil lubrication possible. Submit the exact part number, quantity, and application requirements to request 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 546821. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.