What is the purpose of a trap under an appliance?

• To regulate the water flow

• To stop the noxious smell from the soil stack entering the property

• To filter out debris

• To increase water pressure

What are the majority of traps made from?

• Stainless steel

• Polypropylene

• PVC

• Iron

Which of the following is NOT a jointing method mentioned for traps?

• Push-fit

• Compression using a rubber seal

• Welding

• Soldering

What is the minimum depth of a trap seal if the trap diameter is 50mm or above?

• 30mm

• 40mm

• 50mm

• 60mm

What is the advantage of larger diameter traps?

• Because they are less efficient

• Because they are more difficult to install

• As they contain more water they are less likely to lose trap seal

• Because they are cheaper to produce

What is the purpose of the trap seal depth in plumbing?

• To increase water flow speed

• To prevent water from freezing

• To stop noxious smell entering the property

• To measure water usage

What is the waste fitting size for a washbasin trap?

• 32mm

• 1½"

• 1¼"

• NA

What is the seal depth for soil stack required for a shower trap?

• 75mm

• 50mm

• 40mm

• 100mm

What is the trap diameter for a washing machine?

• 32mm

• 40mm

• 75mm

• 100mm

Which appliance requires a trap with a 100mm diameter?

• Dishwasher

• WC pan

• Bidet

• Bowl urinal