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Spas SANITATION, DESIGN & INSTALLATION fame eine) PU Le Ved WATER SUPPLY AND DISTRIBUTION SYSTEM Water Distribution System (Water Supply System) - the water service pipe, waler distribution pipes, and the necessary connecting pipes, fillings, control valves and all appurtenances in or adjacent to the structure or premises. Domestic Cold Water Supply af the plumbing system consists of the piping and fittings which supply cold water from the ouilding water supply to the fixtures, such as lavatories, bathtubs, water closets and kitchen sinks. This is also known as Water Distribution System. PARTS OF WATER DISTRIBUTION SYSTEM Water Main (Street Main) — A water supply pipe for public or community use controlled by public authority. (Water) Service Pipe — The pipe from the waler main or other approved source of water supply to the building or structure served Water Meter — device used to measure in liters or gallons the amount of water thet passes through the water service, Bi ing Supply — the pipe carrying potable water fram the water meter or other source of water supply to a building or other point of use or distribution on the lot. Bi ‘supply shall also mean water service connection. Water—Distribution Pipe — A pipe which conveys potable water from the building supply pipe to the plumbing fixtures & other water outlets in the building. (Within the structure or an the premises) Fixture Branch —the water supply pipe between the fixture supply pipe & the water distributing pipe. Also, a pipe connecting several fixture. Fixture Supply — a waler supply pipe connecting the fixture with the fixture branch. Riser — a water supply pipe that extends one full story or more to convey water lo branches or to a group of fixtures. Elements of Water Supply and Distribution System A. Service Tap Connection Detail: Corporation Cock — A valve screwed into the street water main to supply the house service connection. Gooseneck ~ the part of the pipe curves like the neck of a goose, usually flexible. Also the lead connection between a service pipe and water main. Curb Stop or Curb Cock - a control valve for the water supply of a building, usually placed between the sidewalk and the street curb; used to shut off the water supply in case of emergency or should the water supply of the building be discontinued. . Meter Connection Detail: Sito Mer > ro wnine ce rve Meter Stop — a valve placed at the street side of the water meter and serves as a controlling device for the building installation. Water Meter - 2 mechanical device used to measure the volume of water passing through a pipe. Types of Water Meter Disk Type Water Meter — used for measuring the flow of water through small water services. Also called as displacement meters. It has a 150-psi (1024-kPa) maximum working pressure; and measure flow in ane direction. This type of meter is common to residential an¢ small commercial installations and is adaptable for remote readout systems. b. © Turbine meter — used in buildings in which water is used in large and constant volume. This type of meter has the characteristics of a compound meter but is more suitable for encountering a variety of flows. (A strainer should be installed upsiream of the meter.) These meters are normally ¥4, %. 1, 1%, and 2 in. (16, 19.1, 25, 40, and 50 mm) in size Compound Meter — a meter thet unites a disk and turbine meter in one body. It has a 150-psi (1034-kPa) maximum working pressure; and measure flow in one direction. This type of meter is used when most of the flow is low but high flows are anticipated. It is capable of recording low flows and has the capacity for high flow rates. These meters are normally 2, 3, 4, and 6 in. (50, 80, 100, and 150 mm) in size; Propeller meter. The sizes of this meter are 2-72 in, (50-1,620 mm). Propeller melers are used where low flows never occur. Fire-line meters or detector-check meters. This type of meter may be required by local codes in a water service that feeds a fire-protection sprinkler system or fire-hydrant system. In such a case, the installation must meet the requirements of the local fire official and the appropriate insurance company. The design should include a minimum of 8 pipe diameters of straight pipe upstream of the meter before any change in diraction or connections. Engr. JDB, RMP, ME1 
