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NHIE Terms (Plumbing System)
Questions with Detailed Verified
Answers
Question: Half Bathroom
Ans: a bathroom with a sink and a toilet; also called a powder room.
Question: 3/4 Bathroom
Ans: a bathroom with a sink, toilet, and a shower, but no bathtub
Question: Aerator
Ans: a device that introduces air into a water stream; usually attached to
the outlet of sink and lavatory faucets.
Question: Adaptor
Ans: a fitting that allows connection of different pipe types or different
pipe sizes.
Question: Air Admittance Valve (AAV)
, Page | 2
Ans: an air pressure operated one-way valve used in place of an
atmospheric plumbing vent; this device is different from a check (cheater)
vent which contains a spring loaded gasket and is not approved for use in
site-built houses in most jurisdictions.
Question: Air Gap
Ans: the vertical distance between the discharge opening of a water
supply fixture, such as a faucet, and the flood rim level of a fixture such as
a sink; an air gap is one method of preventing a cross-connection between
the water supply and drainage systems.
Question: Appliance, plumbing
Ans: an appliance connected to the plumbing system that uses energy to
perform its function, such as a clothes washing machine, dishwashing
machine, food-waste disposer, or a water heater.
Question: Arm, shower
Ans: the generally horizontal pipe that connects the shower riser to the
shower head; usually curves down at about a 30° angle near the shower
head.
Question: Backflow
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Ans: the flow of a contaminate from an unintended source into the water
supply system.
Question: Backpressure
Ans: an uncommon condition that can occur when the pressure at a point
outside the water supply system is greater than the water supply system
pressure. Ex-ample: the weight of water in a swimming pool located above
the water supply system pipes can create enough pressure to force
swimming pool water back into the water supply system pipes.
Question: Backsiphonage
Ans: an uncommon condition that can occur when there is negative
pressure in the water supply system pipes; contaminants can be sucked
into the water supply system pipes. Backsiphonage usually occurs because
of a sudden loss of water pressure combined with rapid drainage of the
water supply system pipes.
Question: Backwater valve
Ans: a device installed in the building drain pipe to prevent the flow of
sewage from a public sewer into the house. A backwater valve is
recommended when plumbing fixtures in a house are located below the
nearest upstream manhole cover of the public sewer.
Question: Bend
NHIE Terms (Plumbing System)
Questions with Detailed Verified
Answers
Question: Half Bathroom
Ans: a bathroom with a sink and a toilet; also called a powder room.
Question: 3/4 Bathroom
Ans: a bathroom with a sink, toilet, and a shower, but no bathtub
Question: Aerator
Ans: a device that introduces air into a water stream; usually attached to
the outlet of sink and lavatory faucets.
Question: Adaptor
Ans: a fitting that allows connection of different pipe types or different
pipe sizes.
Question: Air Admittance Valve (AAV)
, Page | 2
Ans: an air pressure operated one-way valve used in place of an
atmospheric plumbing vent; this device is different from a check (cheater)
vent which contains a spring loaded gasket and is not approved for use in
site-built houses in most jurisdictions.
Question: Air Gap
Ans: the vertical distance between the discharge opening of a water
supply fixture, such as a faucet, and the flood rim level of a fixture such as
a sink; an air gap is one method of preventing a cross-connection between
the water supply and drainage systems.
Question: Appliance, plumbing
Ans: an appliance connected to the plumbing system that uses energy to
perform its function, such as a clothes washing machine, dishwashing
machine, food-waste disposer, or a water heater.
Question: Arm, shower
Ans: the generally horizontal pipe that connects the shower riser to the
shower head; usually curves down at about a 30° angle near the shower
head.
Question: Backflow
, Page | 3
Ans: the flow of a contaminate from an unintended source into the water
supply system.
Question: Backpressure
Ans: an uncommon condition that can occur when the pressure at a point
outside the water supply system is greater than the water supply system
pressure. Ex-ample: the weight of water in a swimming pool located above
the water supply system pipes can create enough pressure to force
swimming pool water back into the water supply system pipes.
Question: Backsiphonage
Ans: an uncommon condition that can occur when there is negative
pressure in the water supply system pipes; contaminants can be sucked
into the water supply system pipes. Backsiphonage usually occurs because
of a sudden loss of water pressure combined with rapid drainage of the
water supply system pipes.
Question: Backwater valve
Ans: a device installed in the building drain pipe to prevent the flow of
sewage from a public sewer into the house. A backwater valve is
recommended when plumbing fixtures in a house are located below the
nearest upstream manhole cover of the public sewer.
Question: Bend
