Page 220 - Valve Selection Handbook
P. 220
Pressure Relief Valves 207
Figure 5-39. Pilot-Operated
Pressure Relief Valve, Pilot-Balanced,
Non-Flowing Modulating. Action.
Application: Gas, LiquiaandTwo-
Phase Fluids. (Courtesy of Anderson,
Greenwood & Co.)
Figure 5-40. Pilot-Operated Pressure Relief Valve, Pilot Nonflowing, Snap Action
Type. Application Primarily for Gas, in Particular, Steam. This Includes Severe Service
Where Dirt, Hydrates, ana High Moisture Levels Occur in the Fluid Medium. Set
Pressures 25 to over 6000 psig (1.7 to over 400 barg), Continuous Service
Temperature -423°F to +500°F (-253°C to 260°C). (Courtesy of Anderson,
Greenwood & Co.)