Okla. Admin. Code § 380:25-5-9 – Pressure on cast iron boilers | Midpage
§ 380:25-5-9
Okla. Admin. Code § 380:25-5-9
Pressure on cast iron boilers
Department of Labor
The maximum allowable working pressure for any cast iron boiler, except hot water boilers, shall be 15 psig. See Sections 380:25-5-21, 380:25-5-22, and 380:25-5-24.