The Anderson Greenwood Series 500 is a unique soft seated safety relief valve designed to handle higher temperatures. It was created with a specific design objective: to decrease the leakage associated with metal-seated safety relief valves under extreme operating temperature conditions.

The result is a modulating, soft-seated, pilot operated valve offering premium tightness with the ability to handle temperatures from -65°F to 515°F [-54°C to 268°C] and a set pressure range of 15 to 720 psig [1.03 to 49.6 barg].

The soft seat in the Series 500 main valve is more resistant to particulate damage than a metal seat, has a longer service life, and can be quickly replaced while the valve body remains installed in the line.

Its unique design enables the main valve to be tight at pressures up to set point. After relieving and reseating, it stays bubble-tight, cycle after cycle. Applications for the Series 500 include hot water, steam (ASME Section VIII Unfired Pressure Vessels), hot hydrocarbon vapors or liquids, and corrosive services.