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Journeyman Plumbing Test (Texas)- Questions and Answers
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Journeyman Plumbing Test (Texas)- Questions and Answers
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Journeyman Plumbing Test (Texas)- Questionsand Answers
Direct-Vent Appliance Correct Ans-Appliances that are constructed and installed so that all air
for combustion is derived directly from the outdoors and all flue gases are discharged to the
outside atmosphere
Draft Correct Ans-The pressure difference existing between the appliance or any component
part and the atmosphere, that causes a constant flow of air and products of combustion
through the gas passages of the appliance to the atmosphere.
Mechanical or Induced Draft Correct Ans-The pressure difference created by the action of a
fan, blower or injector that is located between the appliance and the chimney or vent
termination.
Natural Draft Correct Ans-The pressure difference created by a vent or chimney because of
its height and the temperature difference between the flu gases in the atmosphere.
Draft Hood Correct Ans-A nonadjustable device built into an appliance, or made as part of
the vent connector from an appliance, that is designed to: provide for ready escape of the flue
gases from the appliance in the event of no draft, backdraft or stoppage beyond the draft hood;
prevent a backdraft from entering the appliance; and neutralize the effect of stack action of the
chimney or gas vent upon operation of the appliance.
Drip Leg (LP) / Sediment Trap (NG) Correct Ans-The container placed at a low point in the
system of piping to collect condensate/sediment and from which the condensate/sediment is
removable.
Flue, Appliance Correct Ans-The passage(s) within an appliance through which combustion
products pass from the combustion chamber of the appliance to the draft hood inlet opening of
an appliance equipped with a draft hood or to the outlet of the appliance on an appliance not
equipped with a draft hood.
,Flue Collar Correct Ans-That portion of an appliance designed for the attachment of a draft
hood, vent connector or venting system.
Flue Gases Correct Ans-Products of combustion plus excess air in appliance flues or heat
exchangers.
Fuel Gas Correct Ans-A natural gas , manufactured gas, liquefied petroleum gas (LP) or
mixtures of these gases
Gas Pipe Correct Ans-An installation of pipe, valves are fittings installed on a premises or in a
building and utilized to convey fuel gas.
Labeled Correct Ans-Equipment, materials or products to which have been affixed a label,
seal, symbol or other identifying mark of a nationally recognized testing laboratory, inspection
agency or other organization concerned with product evaluation that maintains periodic
inspection of the production of the above-labeled items and whose labeling indicates either
that the equipment, material or product meets identified standards or has been tested and
found suitable for a specified purpose.
Liquefied Petroleum Gas or LPG (LP-Gas) Correct Ans-Liquefied petroleum gas composed
predominately of propane, propylene, butanes or butylenes, or mixtures thereof that is gaseous
under normal atmospheric conditions, but is capable of being liquefied under moderate
pressure at normal temperatures.
Listed Correct Ans-Equipment, materials, products or services included in a list published by
an organization acceptable to the code official and concerned with evaluation of products or
services that maintains periodic inspection of production of listed equipment or materials or
periodic evaluation of services and whose listing states either that the equipment, material,
product or service meets identified standards or has been tested and found suitable for a
specified purpose.
, Piping System Correct Ans-The fuel piping, valves and fittings from the outlet of the point of
delivery to the outlets of the appliance shut off valves.
Riser, Gas Correct Ans-A vertical pipe supplying fuel gas
Specific Gravity Correct Ans-As applied to gas, specific gravity is the ratio of the weight of a
given volume to that of the same volume of air both measured under the same condition.
Access (to) Correct Ans-That which enables a fixture, appliance or equipment to be reached
by ready access or by a means that first requires the removal or movement of a panel, door or
similar obstruction.
Air Break (Drainage System) Correct Ans-A piping arrangement in which a drain from a
fixture, appliance or device discharges indirectly into another fixture, receptacle or interceptor
at a point below the flood level rim and above the trap seal.
Air Gap (Drainage System) Correct Ans-The unobstructed vertical distance through the free
atmosphere between the outlet of the waste pipe and the flood level rim of the receptacle into
which the waste pipe is discharging. The distance between the waste pipe outlet and the flood
level rim of the receptor must be at least twice the diameter of the indirect waste pipe.
Air Gap (Water Distribution System) Correct Ans-The unobstructed vertical distance through
the free atmosphere between the lowest opening from any pipe or faucet supplying water to a
tank, plumbing fixture or other device and the flood level rim of the receptacle.
Appliance Correct Ans-Any apparatus or device that utilizes a fuel or a raw material as a fuel
to produce light, heat, power, refrigeration or air conditioning that compresses fuel gases.
Backflow Correct Ans-Pressure created by any means in the water distribution system, which
by being in excess of the pressure in the water supply mains causes a potential backflow
condition.
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