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XXII. 2900-40 Series POSRV Options (Cont.)
F. Gag
A manual method of locking a pilot operated relief valve in
the closed position for system hydrostatic test. (Figure 48).
Figure 48: Gag
58 | BHGE
G. Heat Exchanger
Figure 49: Heat Exchanger - Hot Service
Figure 50: Heat Exchanger - Cold Service
This allows the temperature range for the 2900-40 POSRV with
metal seats to be extended to -450°F to 1200°F (-267.8°C to
648.9°C). Not available above 3750 psig (258.5 barg). When the
heat exchanger is selected, the POSRV shall be piped so that the
media enters the heat exchanger first to condition the media's
temperature. Option(s) such as line filter, canister filter, 5-way
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