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.
