Cold Water Flashcards
Which British Standard makes recommendation on the minimum of cold water storage cistern for a particular property?
Bs6700
What is precipitation
When water vapour precipitates, it condenses back into
water droplets and falls to the earth as rain, hail and snow.
What is transpiration
water moves through plants until it reaches the leaves where it evaporates into the atmosphere
What is the primary source of water supply to a residential property?
Mains water supply
Which device is commonly installed in residential plumbing to prevent backflow and contamination of the water supply
Non-return valve
In an indirect cold water system, where is the cold water typically stored before use?
Storage tank in the loft
The service pipe terminates inside the building. At the end of the pipe there is a control device known as a
Service stop valve
What is a borehole
These are man-made, small diameter wells that are drilled directly
through the Earth’s surface to a water source where the water is
extracted for use when water main connection is not an option
because of location. Very high quality of water, which should be
carefully monitored before and during use to ensure the quality is maintained
What is backflow
Water flowing in the opposite direction
Water classified as being fit for human consumption is known as
Potable water
Water mains are the property of the
Water authority
Which type of fitting must not be used on hot water pipe work
Capillary fitting with a lead/tin soldier
What is the primary purpose of flocculation in water treatment?
To remove colour and turbidity
What device prevents backflow in outdoor taps?
Double check valve
In indirect systems, what should cold water cisterns provide?
Adequate storage capacity
