46 CFR Subpart 53.05
Pressure Relieving Devices (Article 4)
April 15, 2021
§
53.05-1
Safety valve requirements for steam boilers (modifies HG-400 and HG-401)
§
53.05-2
Relief valve requirements for hot water boilers (modifies HG-400.2)
§
53.05-3
Materials (modifies HG-401.2)
§
53.05-5
Discharge capacities and valve markings
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