BU 1 QUIZ 2 WATER SUPPLY SYSTEM

Main function is to prevent reversal of flow (backflow) in the line

• Check Valve

• Globe Valve

• Shut-off Valve

• Gate Valve

Controls the flow of water with a movable spindle, Can reduce water pressure (throttling), Only one side of the valve is an inlet

• Shut-off Valve

• Check Valve

• Globe Valve

• Gate Valve

2 common types of gate valves

• Plug Type

• Double Disc

• Wedge Shape

• Conventional Disc

A water supply pipe extending vertically to one full story or more to convey water into pipe branches or plumbing fixtures.

• Branch Pipe

• Vertical Main Pipe

• Distribution Line

• Riser

The principal water distribution pipe running from the water meter from which the various branches and risers to the fixtures are taken

• Branch Pipes

• Horizontal Supply Main

• Distribution Lin

• Stack Pipes

A device used to measure in liters or gallons the amount of water that passes through the water service.

• Stop Valve

• Water Meter

• Electric Meter

• Shut-off Valve

A pipe from the street water main or other source of water supply to the building served.

• Auxiliary Pipe

• Supply Pipe

• Service Pipe

• Main Pipe

It happens when there is a loss of pressure in the water supply. This will cause the water in your facility to flow backwards back into the water supply and/or into other plumbing connections within your facility. This situation can occur when a fire hydrant is opened, when there is a water main break, etc.

• Back-flow

• Back-pressure

• Back-siphonage

• Back-water

It happens when the water supply is connected to a device that creates pressure, such as a boiler, pressure washer, etc. The pressure created can be greater than the water supply, thereby creating backflow.

• Back-siphonage

• Back-water

• Back-flow

• Back-pressure

Pipework noise becomes significant at velocities over 3 m/s, so the system should be designed to operate below 3 m/s even if it means increasing the diameter of the pipe.

• Expansion Noise

• Defective Pipe

• Water Hammer

• Flow Noise