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Reg. 321, Reg. 322, Reg.
323, Reg.
324, Reg.
325, Reg. 326
Drains
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| A drain cock or valve with
a suitable discharge pipe shall be fitted to each water
gauge. |
Reg. 322
Protectors
| Where tubular glass water gauges
are fitted, substantial protectors shall be provided.
The glass shall be suitable treated to prevent splintering. |
Reg. 323
Glass size
| Tubular water gauge glasses
shall be not less than ½ inch and not more than
3/4 inch outside diameter. |
Reg. 324
Safety Devices
| 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. |
Reg. 325
Gauge columns
| 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. |
Reg. 326
Isolating Cocks
| Where isolating
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. |
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