Part Number: 2A33687
Release Date: 8/27/2015
Revision: B
10
Installation (Cont.):
At low flow rates, the valve will discharge fluid at approximately the set pressure (Fig. 2). At higher flow rates,
the valve will discharge fluid at levels above the set pressure. API 520 defines the valve flow capacity as the
rate that can be relieved at an over pressure of 25%. When the fluid pressure falls to the set pressure level or
below, the valve will reseat and reseal.
Figure 2
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