Chapter 51 - Water Heaters.
- 75-51-1 - Pressure-temperature relief valves to be provided and installed; prohibited sales and installations.
- 75-51-3 - Specifications for and installation of relief valves.
- 75-51-5 - Installation or sale of certain untested devices prohibited.
- 75-51-7 - Markings on, and standards for, hot water storage hot water storage tanks.
- 75-51-9 - Chapter inapplicable to prior installations.
- 75-51-11 - Penalties for violations.