air-pipe
81pipe-opener — ˈ ̷ ̷ˌ ̷ ̷( ̷ ̷) ̷ ̷ noun 1. Britain : a walk or other exercise in the open to get fresh air in the lungs 2. : a practice game or trial preliminary to a contest * * * pipeˈ opener noun (informal) 1. A walk or spell of exercise in the fresh air 2 …
82air — n. & v. n. 1 an invisible gaseous substance surrounding the earth, a mixture mainly of oxygen and nitrogen. 2 a the earth s atmosphere. b the free or unconfined space in the atmosphere (birds of the air; in the open air). c the atmosphere as a… …
83Air source heat pumps — An air source heat pump is a type of heat pump which use the outside air as a heat source or heat sink to heat or cool an interior space. Air source heat pumps are more efficient than oil, gas, and electric resistance heating in mild climates… …
84air — I (New American Roget s College Thesaurus) I n. atmosphere (See air); mien, bearing, appearance; tune, melody (See music). v. t. ventilate (See air); proclaim, broadcast (See publication). II Earth s atmosphere Nouns 1 …
85air duct — /ˈɛə dʌkt/ (say air dukt) noun 1. a channel or pipe carrying warmed air in a heating system. 2. a channel, tube, or pipe which forms part of a ventilation system …
86air brake — noun 1. : a brake operated by a piston driven by compressed air from reservoirs connected to brake cylinders by triple valves which upon reduction of air pressure in the brake pipe automatically admit air from the reservoirs into the brake… …
87Air lock — An air lock is gas trapped in a high point of a liquid filled pipe system. The gas, being lighter than the liquid, rises to the highest point and restricts the flow of liquid. In very tall systems, the gas can prevent flow entirely.Flushing the… …
88Air gap (plumbing) — An air gap, as it relates to the plumbing trade, is the unobstructed vertical space between the water outlet and the flood level of a fixture.A simple example is the space between a wall mounted faucet and the sink rim (this space is the air gap) …
89Air suction valve — An air suction valve (SAV ) is a subsystem used to reduce emissions in the exhaust gases of internal combustion engines.Working principleWhen an engine exhaust valve is open, the pressure in the exhaust manifold is higher than atmospheric… …
90pipe fitter — noun a craftsman who installs and repairs pipes and fixtures and appliances • Syn: ↑plumber • Hypernyms: ↑craftsman, ↑artisan, ↑journeyman, ↑artificer * * * noun : one who fits, threa …
