Reg. 321, Reg. 322, Reg.
325, Reg. 326
|A drain cock or valve with
a suitable discharge pipe shall be fitted to each water
|Where tubular glass water gauges
are fitted, substantial protectors shall be provided.
The glass shall be suitable treated to prevent splintering.
|Tubular water gauge glasses
shall be not less than ½ inch and not more than
3/4 inch outside diameter.
|Water gauge glass
mountings shall be fitted with self-closing devices in
the bottom arm and it is recommended that a similar device
should be fitted in the top arm.
|Where the gauges
are mounted on a column there shall be no connecting passage
between the top and bottom arms of the column unless valves
or cocks are fitted between the columns and the boiler.
cocks or valves connecting water gauge pipes to the boiler
are fitted, they shall be not less than 1 inch bore and
of the bolted cover type with separate packing gland.