Why are 'P' and 'S' traps so called?

Because of their installation methods.

What is a running trap used for in plumbing?

A running trap is used when the trap needs to be some distance away from the appliance, for example when the space under the appliance is limited. It is installed in the discharge branch itself.

A running trap is used to increase water pressure in the plumbing system.

A running trap is used to filter debris from water before it enters the appliance.

A running trap is used to connect two different types of pipes together.

What is a slimline, pedestal or straight through trap specifically designed for?

A slimline, pedestal or straight through trap is specifically designed for use under a wash-hand basin. The slimline nature of the trap allows the waste to be hidden behind the pedestal.

A slimline, pedestal or straight through trap is specifically designed for use under a kitchen sink to maximize water flow.

A slimline, pedestal or straight through trap is specifically designed for use in outdoor drainage systems to prevent blockages.

A slimline, pedestal or straight through trap is specifically designed for use in industrial waste disposal units.

What are anti-vac or resealing valves used for in plumbing?

They are used if there is a possibility of trap seal loss due to siphonage.

They are used to increase water pressure in pipes.

They are used to filter impurities from water.

They are used to prevent pipe corrosion.

Why are anti-vac traps not recommended on new installations?

Because they may not hold during an air test.

Because they are more expensive than standard traps.

Because they are required by building codes.

Because they increase water pressure.

What feature do anti-vac traps have to avoid siphonage?

They have a small air admittance valve to allow a small amount of air into the waste pipe under negative pressure.

They have a built-in water heater to prevent backflow.

They use a chemical sealant to block odors.

They are made of stainless steel to resist corrosion.

What is a self-sealing waterless valve officially not considered as, and why?

A self-sealing waterless valve is officially not considered a trap because it does not use a seal of water.

A self-sealing waterless valve is officially not considered a vent because it does not allow air to pass through.

A self-sealing waterless valve is officially not considered a filter because it does not remove impurities.

A self-sealing waterless valve is officially not considered a pipe because it does not transport water.

What causes 'wavering out' in plumbing trap seals?

Wind passing over the top of a soil stack causing turbulence

What is one effect of wavering out on the trap seal?

It loses a little water from the seal every time the ripples of water are high enough

What does the label 'Loss of water depth due to pressure fluctuation' indicate in the context of trap seal loss?

It indicates that water is lost from the trap seal when pressure fluctuations occur due to wind movement.

It indicates that the trap seal is permanently blocked by debris.

It indicates that the water in the trap seal is replaced by air due to evaporation.

It indicates that the trap seal is intentionally removed for maintenance.

Traps (Plumbing)

Authored by Scott Lincoln

Construction

12th Grade

Used 1+ times

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of a trap under an appliance?

To increase water pressure

To stop the noxious (unpleasant) smell from the soil stack entering the property

To filter water

To prevent leaks

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The majority of traps are made from _________

polypropylene

aluminum

copper

steel

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Jointing methods for traps are primarily push-fit and, more commonly, ________ using a rubber seal.

compression

adhesive

soldered

threaded

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the trap seal depth? Fill in the blank: The trap seal depth is the retained depth of ______ stopping the noxious smell entering the property.

water

air

oil

sand

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the trap diameter for a wash basin?

32mm

25mm

40mm

50mm

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the trap diameter for a bidet?

32mm

25mm

40mm

50mm

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the trap diameter for a bath?

40mm

32mm

50mm

25mm

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Traps (Plumbing)

What is the purpose of a trap under an appliance?

The majority of traps are made from _________

Jointing methods for traps are primarily push-fit and, more commonly, ________ using a rubber seal.

What is the trap seal depth? Fill in the blank: The trap seal depth is the retained depth of ______ stopping the noxious smell entering the property.

What is the trap diameter for a wash basin?

What is the trap diameter for a bidet?

What is the trap diameter for a bath?

What is the waste fitting size for a shower?

What is the trap diameter for a shower?

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

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