Pressure Relief Valves 185
Figure 5-22. Supplementary Loaded Safety
Relief Valve. (Courtesy of Crosby Valve &
Gage Company, Wrenfham, MA.)
Figure 5-23. Typical
Control Piping
Schematic of
Supplementary-
Loaded Safety Relief
Valve. (Courtesy of
Crosby Valve & Gage
Company, Wrenfham,
MA.)