HD 550 is a single stage high pressure regulator and is designed as a piston pressure regulator and reduces the pressure of com- pressed gases or liquids to a maximum outlet pressure of 550 bar.
To guarantee a good control characteristic of HD 550 even for low pressures piston dia- meters are different (depending on flow and pressure).
The outlet pressure of HD 550 is adjustable without strength even at high working pres- sures by capture vented construction and a control spindle with axial bearing.
HD 550 can be equipped optionally with inlet and outlet gauge.