Section 680IAC2-10-9. Pressure or altitude gages for hot water heating boilers; connections; dial range; stops

   (a) Each hot water heating boiler shall have a pressure or altitude gage connected to it or to its flow connection in such a manner that it cannot be shut off from the boiler except by a cock with a tee or lever handle, placed on the pipe near the gage. The handle of the cock shall be parallel to the pipe in which it is located when the cock is open.

  (b) The scale on the dial of the pressure or altitude gage shall be graduated to not less than one and one-half (1½) times the maximum allowable working pressure. The gage shall be provided with effective stops for the indicating pointer at the zero (0) point and at the maximum pressure point.

  (c) Pressure or altitude gage connections shall be of non-ferrous composition when smaller than one (1) inch pipe size. (Boiler and Pressure Vessel Rules Board; 680 IAC 2-10-9; filed Jan 5, 1996, 10:15 a.m.: 19 IR 1134; readopted filed Jul 9, 2001, 1:33 p.m.: 24 IR 3822; readopted filed Sep 21, 2007, 9:16 a.m.: 20071010-IR-680070389RFA; readopted filed Oct 19, 2007, 1:08 p.m.: 20071114-IR-680070389RFA; readopted filed Sep 5, 2013, 10:09 a.m.: 20131009-IR-680130182RFA)