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vracraahorty | tulingovea
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Figure 1: Tapping of water mains
Figure 1: Tapping of water mains
This necessary to know the following terms relating to plumbing, pri
used in the house plumbing
ples and the common practices
1, Water main: A water supply pipe vests in the administrative authority for the use of public or
community,
2, Ferrule: It is gunmetal or bronze serewed into the hole drilled in CI pipe mains, Communication
pipe takes off from the ferrule. The pressure in the domestic supply and equal distribution among the
house connection are affected by adjusting the ferrule opening. Normally the ferrule opening is equal
in area to the area of flow in communication pipe.
3. Saddle:
used in place of ferrule for mains of AC or PVC pipes.
4, Communication pipes: It isa pipe taking off from the ferrule for the house connection. Its owned
and managed by the water supply authority. Communication pipe terminates at the boundary of the
consumer's premises,
5. Supply pipe: it isthe par ofthe house connection beyond the stop cock. Its owned and maintained
by the consumer. No pumps shall be installed on tis pipe 6, Water meter: It is installed to measure the flow. It is an integrating meter that it records the total
flow up tothe time of measurement. Generally, 12.5 mim to 18.75mm rotary water meters are installed
cither at the beginning or at the middle of the service pipe. A masonry pit is constructed around it. It
has facility of sealing by the water supply authority A meter may also be Jocated at this point, The
communication and supply pipe should be snaked to allow for settlement in the ground. During warm
weather, plastic pipes in particular should be snaked to accommodate contraction after bac
7. Residual pressure: It is generally measured at the ferrule and should be about 7m head of water.
8. Goose Neck: Its the short bent pipe and allow for small changes in length due to expansion and
‘movement of pipes due to soil sottlements
Tapping of water mains on street by means of Ferruke,
Water supply network in building comprises of
A. Tapping of water from the main supply line
B. Water meter and non - return valve
C. Underground storage tank
D. Pump and non- return valve
E, Overhead storage tank.
F. Connection to individual storage tank
G. Connection to iual Unit
Figure 2: Details of service connections (Plan)
A. TAPPING OF WATER FROM THE MAIN SUPPLY LINE:
‘The main is drilled and tapped live with special appurtenance Ferrule, which leaves a plug valve ready
{for Connection to the communication pipe. A goose neck or sweeping bend is formed at the connection
to olieve strosses on the pipe and valve, At or close to the property boundary, a stop valve is located
‘with an aceess compartment and cover at ground level.
A
tonal deta of tapping of water mains B, WATER METER AND NON-RETURN VALVE
(alled by authority to measure the quantity consumed by user and water charges are levied
‘on it, Located atthe entry point of consumer supply pipe inside the premises
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Figure S: Typical plan of domestic connection Figure 6: Typical section of domestic connection
