When the water pressure is not sufficient to
supply freely and continuously all fixtures, a house supply tank must
be provided of sufficient size to afford an ample supply of water
to all fixtures at all times. Such tanks must be supplied from the
pressure or by power pumps as may be necessary.
A.
Manner of installation or valve. No plumbing fixture
or device shall be supplied and maintained directly from a water supply
system through a flushometer or other valve unless such valve is installed
in a manner such as to prevent any possibility of polluting the water
supply.
B.
Interconnection prohibited. No plumbing fixture, device
or construction shall be installed and maintained which will provide
an interconnection between a distribution system of water for drinking
and domestic purposes and a drainage soil or waste pipe so as to permit
or make possible the backflow of sewage or waste into the water supply
system.
C.
Vacuum breaker required. All flushometer valves shall
have a vacuum breaker.
House service pipes must be connected to the
street mains by means of taps, and a stopcock or valve placed under
the sidewalk at the curb, in compliance with the rules and regulations
of the Water Department, and the same shall be inspected under the
supervision of the Water Department.
A separate stop or valve must be placed upon
a service pipe inside the front wall.
The diameters of street service pipes must not
be less than 3/4 inch for dwellings occupied by four families or less
on not more than two floors; one inch for apartment houses occupied
by more than six families; and 1 1/2 inches for hotels, factories
and other miscellaneous buildings; provided that in no case can the
diameter of the service pipes be less than the diameter of the tap
installed under the supervision of the Water Department.
All water service pipe must be copper or lead
to the property line.
In laying water service pipes under permanent
roads, same must be driven across road. No tunneling shall be permitted.
Water meters shall be installed as follows:
A.
Position, protection. The meter shall be set in a
horizontal position within easy and ready access for inspection and
shall be protected from frost and hot water.
B.
Connection to service line. The meter must be connected
to the service line by a union to a shutoff valve on each side of
the meter.
C.
Prohibited connection. No connection to any house
service line or fixture shall be made between the water main and the
meter.
Domestic hot water boilers shall be installed
with a relief safety valve on the cold water connection.
A horizontal swing-check valve must be installed
on the service side of a pressure-reducing valve wherever used for
automatic filling for a hot water heating system.
