WorksheetsMTL2 Learner Outcome 5
Total questions: 27
Worksheet time: 14mins
Why is it important to check water pressure and flow rate before installing modern appliances?
To reduce installation time
To ensure the water supply meets manufacturer performance requirements
To avoid using measuring equipment
To comply with gas safety regulations
Where should a pressure gauge be connected for the most accurate reading of incoming water pressure?
The highest tap in the building
The tap nearest to the incoming stop valve
The kitchen sink tap
The outside garden tap
What equipment is commonly used to measure both static and dynamic pressure and flow rate?
Thermometer
Bourdon pressure gauge
Pressure and flow rate kit
Spirit level
What is the purpose of using a stopwatch and measuring jug when checking flow rate?
To measure water temperature
To calculate water pressure
To estimate water usage per day
To determine flow rate in litres per minute
What is the purpose of the Philmac Universal Transition Coupling?
To measure water pressure
To insulate pipework
To connect different types of pipe using a common fitting body
To disinfect water before use
What must be inserted into MDPE pipe when using brass compression fittings?
A rubber washer
A copper or nylon insert
A lead sleeve
A plastic clip
Which type of fitting requires the copper pipe to be flared using a swaging tool?
Push-fit fitting
Type B Manipulative Compression fitting
Capillary end feed fitting
Leadlock fitting
Which fitting is commonly used to connect lead pipe to copper or polybutylene pipe?
Compression fitting
Capillary fitting
Leadlock fitting
Push-fit coupling
Where should a supply stop valve be positioned in a cold water system?
At the highest point in the system
As close as possible to where the water supply enters the building
Next to the boiler
Under the kitchen sink
Why must drain valves be installed at low points in the system?
To increase water pressure
To prevent pipe corrosion
To allow complete draining and prevent stagnation
To improve water temperature control
What is the purpose of installing backflow prevention devices?
To increase water flow
To prevent contamination of the mains water supply
To reduce water temperature
To improve water pressure
Which tool should be used to drill holes in a plastic cistern to avoid damage?
Spade bit
Heated copper pipe
Hole saw
Flathead screwdriver
What must be done after drilling holes in a plastic cistern?
Paint the inside of the cistern
Fill it with water to test for leaks
Clean out any debris to prevent damage to taps and valves
Burn the edges of the holes to seal them
What type of washers should be used when connecting pipework to a plastic storage cistern?
Rubber washers
Fibre washers
Poly-washers (plastic washers)
Metal washers
Which of the following should not be used when making joints on plastic cisterns?
PTFE tape
Poly-washers
Jointing compounds containing linseed oil
Tank connectors
Why should you avoid overtightening a tank connector on a plastic cistern?
It will cause the washer to slip
It may damage the pipe
It can cause the cistern to split
It will make the joint too loose
According to the Water Supply (Water Fittings) Regulations 1999, which of the following is not permitted?
Installing pipes in a studded wall
Embedding water fittings in solid floors
Using ducts with removable covers
Installing pipes under suspended timber floors with access
What is required when installing pipework in areas subject to frost, such as garages or roof spaces?
Larger pipe diameters
Extra pipe joints
Metal pipework only
Insulation protection
Why is it beneficial to place a cistern on a larger platform surface area in a roof space?
It makes the cistern easier to access
It distributes the weight more evenly and reduces stress on the structure
It reduces the pressure of the water supply
It increases the water temperature
What type of connection is typically used for bath taps, including mixer taps?
Monobloc tails
Push-fit fittings
Tap connectors
Soldered joints
Which type of tap usually has 10mm or 15mm tails for connection?
Bath taps
Monobloc mixer taps
Shower mixer valves
WC float valves
When connecting a combination boiler, what must always be followed?
Local authority guidelines
Manufacturer’s instructions
WRAS installation guide
Gas Safe regulations
What type of connection is recommended for a cold water storage cistern to prevent water hammer?
Flexi-connector
Plastic push-fit
Rigid copper tube with a tap connector
Monobloc tail
What must always be fitted when connecting a WC flushing cistern or cold water storage cistern?
A pressure reducing valve
A drain valve
An isolation valve
A thermostatic mixing valve
Why should lead–copper–lead joints be avoided in cold water systems?
They are difficult to install
They cause excessive pressure loss
They can lead to galvanic corrosion and contamination
They are not compatible with plastic fittings
What are the two main reasons for insulating cold water pipework and components?
To reduce noise and improve water pressure
To prevent corrosion and reduce flow rate
To stop water from becoming too warm and to protect against freezing
To improve taste and reduce lime scale
According to the Water Regulations Guide G4.2, which cold water fittings must be protected against freezing?
Only those inside the thermal envelope
All fittings regardless of location
Fittings outside the thermal envelope or outside the building
Only fittings in roof spaces
