Types of Positive Pressure Relieving Devices

Types of Positive Pressure Relieving Devices (see manufacturers catalogs for design details) 

There are many design features and styles of safety relief valves, such as flanged ends, screwed ends, valves fitted internally for corrosive service, high temperature service, cryogenic service/low temperatures, with bonnet or without, nozzle entrance or orifice entrance, and resistance to discharge piping strains on body. Yet most of these variations have little, if anything to do with the actual performance to relieve overpressure in a system/vessel. 

A few designs are important to the system arrangement and relief performance  

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