Plumbing level 2 - PP2- Cold water

What is the minimum size of MDPE pipe for a modern property?

• 20mm

• 30mm

• 25mm

• 15mm

Where is the water meter commonly installed?

• In the kitchen

• In the attic

• In the bathroom

• At the property boundary in a chamber

According to the Water Regulations 1999, where should a stop valve be located?

• Outside the building

• Inside the building, above floor level, near the point of entry

• In the attic

• In the basement

What is the recommended maximum length of MDPE above floor level?

• 250mm

• 100mm

• 150mm

• 200mm

What is the purpose of a DOV (Drain Off Valve)?

• To heat water

• To filter water

• To drain the system

• To increase water pressure

What are the two key tests with cold water systems?

• Temperature and pH

• Pressure and flow rate

• Hardness and softness

• Chlorine and fluoride levels

What is the volume of water discharging to an appliance measured in?

• Cubic meters per hour

• Millilitres per second

• Gallons per minute

• Litres per minute

What is a direct water system?

• A system where all water is stored in a cistern

• A system that uses only hot water

• A system where all cold water is supplied directly to each outlet on mains pressure

• A system that uses only rainwater

What is an advantage of a direct water system?

• More expensive

• More pipework in roof space

• Good pressure at all draw off points

• Stored supply of hot water

What is a disadvantage of an indirect water system?

• Stored supply of hot water

• Constant pressure

• Possible contamination of water at draw-off points

• Potable water at every draw off point