Cold water Flashcards
Cold
The boundary stop tap is normally found
Outside property near tap on path
The water Regulations state that the warning pipe in cold water cistern must be
Insulated throughout its length to prevent freezing
At least 28mm diameter
Sized to be able to cope with flow of water should the inlet valve fail
At least 22mm diameter
The vessel used to hold water in storage is refered to as a
Cold Water Tank
Hot Water Storage Cistern
Cold Water Storage Cistern
Hot Water Tank
Which British Standard makes recommendation on the minimum size of cold water storage cisterns for a particular property?
BS 5452
BS EN 8558
BS 8000
BS EN 12056
Where would you find details of the quantity of fittings delivered to site by a plumbers merchant?
The system of pipework which is to be found buried beneath the roads and streets which is used to convey water is referred to as the
Which of the following types of cold water system would normally be used in a dwelling which has high incoming water?
Direct
Condensing
Indirect
Boosted
Which one of the following valves contains a valve seat (orifice) which you can change according to the available water pressure in the supply pipe?
screwdriver operated service valve
A fullway gate valve
A screwdown stop valve
A float operated valve
What us the minimum recommended clip spacing for a 22mm vertical copper pipe?
1250mm
1500mm
2000mm
2400mm
To overcome the problems of noise created by high pressure mains in storage cisterns, the float operated valve is replaced with
Service valve
Class 2 float valve
Equilibrium float valve
Pillar tap
The system of pipework which is to be found buried beneath the roads and streets which is used to convey water is referred to as the
Water mains
Service mains
Aqufier
Sewer pipe
A float operated valve will respond to the rise and fall of the ……………… in the storage cistern
Temperature of the water
Density of the water
Pressure of the water
Level of the water
The special property of the ferrule is that it can be inserted into the water main using a clamp on chamber…
Without having to dig holes in the ground
Without having to turn off and drain down the water main
After turning off the water main and draining down
Having first informed the people in the street
The boundary stop tap is normally found
Just outside the perimeter of the property which it feeds
Just inside the perimeter of the property which it feeds
In the road outside the property which it feeds
Just outside the front door
Direct cold water systems in areas with very high mains pressure are prone to giving off noise when the water flows. This is referred to as
Rapid draw-off
Velocity noise
Excessive pressure
Partial blockage
BS EN 8558 recommends that in a roof space, the loft insulation should be
Doubled to prevent the water from heating up
Removed directly underneath the cistern to stop it freezing
Completely wrapped around the cistern
Of the highest quality Rockwool
