Worksheets214 ppt6 Fluid Categories Quiz
Total questions: 39
Worksheet time: 20mins
What is an example of a fluid in Category 1?
Hot water in cylinder
Mains water
Primary water
Urinal water
Which fluid category represents a significant health risk and contains toxic substances?
Category 1
Category 2
Category 4
Category 5
What type of water is classified under Category 3?
Wholesome water
Water with slight health risk
Water with severe health risk
Water with significant health risk
Which of the following is an example of a Category 5 fluid?
Bath water
Discharge from combi tap
Washing machine water
Urinal water
What is the description of Category 2 fluids?
Wholesome water supplied from the water undertaker
Water that would be classed as Cat 1, except for colour, odour, appearance or temperature
Fluids representing a slight health risk and unsuitable for drinking
Fluids representing a severe health risk
What is backflow in plumbing?
Water flowing in the intended direction
Water flowing in the opposite direction to that which it is designed to travel
Water being heated to a high temperature
Water being filtered for impurities
What causes back siphonage in plumbing systems?
High water pressure
Negative pressure (sucking)
Excessive water flow
Water heating
What is the main purpose of a backflow prevention device in plumbing?
To increase water pressure
To prevent water from flowing backwards
To filter impurities from water
To regulate water temperature
What can cause water to flow backwards in a plumbing system?
High water temperature
Sudden loss of pressure at the water main
Excessive water usage
Blocked pipes
What causes water to flow back towards the water main in a backflow prevention system?
Increased pressure in the main
Gravity due to zero pressure in the main
High temperature in the system
Chemical reaction in the pipes
What can cause a sudden loss of pressure in a water system?
A closed valve
A burst on the water undertaker’s main
A decrease in water temperature
An increase in water demand
What is one type of non-mechanical backflow protection?
Single check valve
Double check valve
Air gap
Pressure regulator
According to the Water Regulations, who is responsible for installing proper backflow protection?
The customer
The plumber
The manufacturer
The government
What type of valve must be installed to protect category 1 water from category 2 water?
Pressure relief valve
Single check valve
Ball valve
Gate valve
Where should a single check valve or non-return valve be installed?
After the outlet
Before the outlet
At the water source
At the water meter
What is the purpose of a Type EB non-verifiable single check valve in plumbing?
To mix hot and cold water
To protect the mains cold water supply
To increase water pressure
To filter impurities from water
In which situation is a Type EB non-verifiable single check valve used?
When a true mixer monobloc tap is fitted
When a water heater is installed
When a water softener is used
When a water filter is installed
What type of valve must be installed to protect wholesome water from a filling loop on a combination boiler?
Single check valve
Double check valve
Pressure relief valve
Ball valve
What is the purpose of a non-verifiable double check valve in plumbing?
To prevent backflow of contaminated water
To increase water pressure
To reduce water temperature
To filter impurities from water
Why is it important for the tap outlet to be above the spillover level of the basin?
To ensure water flows faster
To prevent contamination from backflow
To reduce water usage
To increase water temperature
Why do we install an RPZ valve?
To prevent backflow from category 4 water
To prevent backflow from category 3 water
To prevent backflow from category 1 water
To prevent backflow from category 2 water
In which situation might you find the need for an RPZ valve in a domestic setting?
When there is a garden
When there is a swimming pool
When there is a basement
When there is a garage
What is the purpose of maintaining an air gap in plumbing systems?
To prevent contamination
To increase water pressure
To reduce water temperature
To enhance water flow
Which of the following is NOT a place where air gaps are found?
Cisterns
Basins
Radiators
Shower hoses
What is the height of the AUK1 air gap with regard to the discharge pipe from a WC cistern, to the spillover of the pan ?
300mm
25mm
50mm
100mm
What does the AG air gap measure?
Height from the warning pipe to the FOV outlet
Height from the WC pan spillover to the cistern spillover
Distance between overflow and water level
Distance between FOV and overflow
Diagram showing the AUK1 and AG air gaps in a plumbing system.
AUK1 is larger than AG
AG is larger than AUK1
AUK1 and AG are equal
AUK1 is smaller than AG
What is the required distance between the float valve connection and the water level in an AUK 2 air gap system?
50mm
25mm
75mm
100mm
How far should the overflow be from the water level in an air gap system?
50mm
25mm
10mm
40mm
What is an AUK3 air gap?
A gap between the outlet of a tap and the spillover level on a sink.
A gap between the sink and the floor.
A gap between the tap and the wall.
A gap between two pipes under the sink.
What is used to prevent flexible shower hoses from being submerged in bathwater?
A shower rail with a rubber restrainer
A metal clamp
A plastic cover
A waterproof sealant
Which regulations cover the protection of pipework from freezing and undue heat?
Water Regulations, BSEN806, and BS8558
Health and Safety Regulations
Building Codes, BSEN1234, and BS6789
Environmental Protection Act
What is one of the five main areas of the Water Regulations?
Protecting water from contamination
Increasing water pressure
Reducing water usage
Enhancing water taste
Why is the correct use and positioning of backflow devices important?
To prevent water contamination
To increase water flow
To reduce water temperature
To enhance water color
Describe what is meant by backflow?
The flow of water in the intended direction
The reverse flow of water into the clean water supply
The process of water filtration
The increase in water pressure
Describe what is meant by back siphonage?
The forward flow of water
The process of water heating
The reverse flow of water due to a drop in pressure
The increase in water temperature
Name the device used to protect against a water category 3 backflow?
Air gap
Double check valve
Pressure relief valve
Water filter
Name the device used to protect against a water category 4 backflow?
Reduced pressure zone device
Single check valve
Water softener
Air gap
Name the device used to protect against a water category 5 backflow?
Air gap
Double check valve
Pressure relief valve
Water filter