Subpart 53.05 - PRESSURE RELIEVING DEVICES (ARTICLE 4)
- Section 53.05-1 - [Effective 9/10/2024] Safety valve requirements for steam boilers (modifies HG-400 and HG-401)
- Section 53.05-1 - [Effective until 9/10/2024] Safety valve requirements for steam boilers (modifies HG-400 and HG-401)
- Section 53.05-2 - [Effective 9/10/2024] Relief valve requirements for hot water boilers (modifies HG-400.2)
- Section 53.05-2 - [Effective until 9/10/2024] Relief valve requirements for hot water boilers (modifies HG-400.2)
- Section 53.05-3 - [Effective 9/10/2024] Materials (modifies HG-401.2)
- Section 53.05-3 - [Effective until 9/10/2024] Materials (modifies HG-401.2)
- Section 53.05-5 - [Effective 9/10/2024] Discharge capacities and valve markings
- Section 53.05-5 - [Effective until 9/10/2024] Discharge capacities and valve markings