A Vision To Clear Solutions.
Bath, Lavatory and Mixing Taps
Bath, lavatory and mixing taps shall generally comply with the
requirements specified for bib taps in IS: 781-1977.
Combination taps, mixing valves (see IS: 1701-1960) or blenders, for
mixing hot and cold water and discharging the mixture through a single outlet
shall be fed with both hot water and cold water under pressure only from
cistern sat the same level or from the same cistern.
the cold water should not be slide directly from a service pipe as
other- &e, there is danger of scalding if the pressure in the service pipe
unexpectedly fails.
Position Where Self-closing Taps are Permissible
Self-closing taps and other special fittings of makes approved by the
Authority may be permitted to be used on direct pipes and distributing pipes
from tanks.
Self-closing taps shall be of non-concussion type and shall comply with
IS : 1711-1970
Water-Closet Flushing Cistern
All water closets and urinals shall be supplied with water from proper
flushing cistern or from other equally efficient and suitable waste preventing
apparatus. Flushing cisterns having 10 liters discharge capacity and
discharging at an average rate of 5 l/s are considered suitable for wash-down
water closets and squatting pans IS : 2556 ( Part 2 )-19818 and IS : 2556 (
Part 3 )-198111.
Water-Closet Flush Valves
No person shall fix, fit or use upon any premises any flush valves, or
similar apparatus through which water supplied by @e Authority is intended to
pass unless previous permission of the Authority is obtained. Such flush’
valves or flushing apparatus shall be of the self-closing type and shall be
allowed on water-closets only
Urinal Flushing Cistern
Every urinal flushing cistern, in which water supplied by the Authority
is used, shall have an efficient waste preventing apparatus so constructed as
to prevent discharge of more than 5 litres of water to each, stall, basin or
compartment at each flush ( see IS .: 2326-1970
Use of Automatic Flashing Cisterns
Flushing ‘apparatus capable of discharging automatically ( -SW IS :
2326;1970* ) may be allowed to be fitted on water-closets
Use of Ball Valves
Ball valves shall be of one of the classes, namely high pressure or low
pressure and shall conform to the requirements specified inIS : 1703-1977.
Silencing Pipe of Ball Valves
A silencing pipe may be fitted to a ball valve when 4 emitted by the-
Authority and in such cases antisiphonage holes shall be provided in the pipe
or in the body of valves and these holes shall be above the overflow level.
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