R.C.S.A. § 29-232-87
Nonstandard cast iron boilers
Cite as Conn. Agencies Regs. § 29-232-87
The maximum allowable working pressure of a nonstandard boiler composed principally of cast iron shall not exceed fifteen psig for steam service or thirty psig for hot water service. The maximum allowable working pressure of a nonstandard boiler having cast iron shell or heads and steel or wrought iron tubes shall not exceed fifteen psig for steam service or thirty psig for water service.