| 1. An underground railway. 2. A passage under a street for pedestrians or utility lines. 3. An underpass.
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| A centrifugal pump which forces water out of an area or surface.
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| 1. In a sandblast gun, one in which the abrasive is siphoned to the nozzle. 2. In a spray gun, one in which the fluid is siphoned to the spray head.
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| Tube or pipe used to carry refrigerant gas from evaporator to compressor.
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| In a swimming pool, pipework supplying the main circulating pump.
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| That portion of the circulation piping located between the pool structure and the inlet side of the pump and usually including the main outlet piping, skimmer piping, vacuum piping, and surge tank piping.
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| Device located in the suction line which maintains constant pressure in an evaporator during the running portion of a cycle.
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| Pressure in low-pressure side of a refrigerating system.
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| Two-way manually operated valve located at the inlet to compressor; it controls suction gas flow and is used to service unit.
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| Low-pressure side of the system extending from the refrigerant control through the evaporator to the inlet valve of the compressor.
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| spotting of paint job caused by oil in new coat being absorbed by spots or porous areas of surface.
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| Valve in refrigeration compressor which allows vaporized refrigerant to enter cylinder from suction line and prevents its return.
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| The power of absorption possessed by a plastered surface.
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| A clause in a property insurance policy that authorizes the insured to expend funds to protect the insured property.
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| Deleterious chemical or physical reaction between sulfates in ground water or soil and certain constituents in cement, which result in expansion and disruption of the concrete.
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| Ability of cement paste and aggregate to withstand sulfate attack.
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| A dense corrosive oily colorless fluid that is a vigorous oxidizing and dehydrating agent; also called Oil of Vitriol.
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| A judgment awarded on the basis of affidavits and legal briefing rather than on the basis of evidence introduced at a trial.
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| 1. A horizontal beam such as a lintel. 2. A stone cap on a pier.
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| see Main Outlet.
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| A small capacity pump that empties pits receiving groundwater, sewage, or liquid waste.
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| A sump is a specially made receiving tank to receive wastes or sewage by gravity; from the sump the wastes or sewage is lifted by pump or ejectors to be discharged into the building drain or building sewer.
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| Place skipped when applying finishing materials to a surface.
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| An instrument showing the time by the shadow of a pointer (called a gnomon or stylus) cast by the sun on a graduated disc.
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| A device that protects from the suns rays, such as an awning or eyebrow.
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| Heavy dose of chlorine added to pool water to burn out nitrogen compounds when bacteria, algae, or ammonia build-up cannot be rced by normal treatment.
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| The property of zero electrical resistance in some substances at very low absolute temperatures.
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| The additional elevation of the outer side of a curved section of a roadway to overcome centrifugal forces of vehicles.
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| 1. Temperature of vapor above its boiling temperature as a liquid at that pressure. 2. The difference between the temperature at the evaporator outlet and the lower temperature of the refrigerant evaporating in the evaporator.
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| Heat exchanger arranged to take heat from liquid going to evaporator and using it to superheat vapor leaving evaporator.
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