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2-way valve
The purpose of a 2-way control valve is to shut off water flow or to control and regulate flow through a pipe.
3-way valve
The purpose of a 3-way control valve is to shut off water flow in one pipe while opening water flow in another pipe, to mix water from two different pipes into one pipe, or to separate water from one pipe into two different pipes.
Abrasive liquids
An abrasive liquid contains substances, often minerals or inorganic substances, that are harder than the material they rub against.
Adaptation
Whilst mitigation means working to reduce greenhouse gases, adaption contrasts by focussing the efforts on trying to control the environmental damage instead of trying to reduce it.
Aerobic
In wastewater transport and treatment aerobic means that oxygen is available and that it can be used as an oxidation agent in the degradation of organic matter.
Air cooler
The function of an air cooler is similar to that of an evaporator. What makes it diff. is the type of cooling medium it uses.
Air Handling Unit (AHU)
An Air Handling Unit (AHU) is used to condition and circulate air as part of a heating, ventilating, and air-conditioning system.
Air heating
A heating system in a building can be based on radiators, convectors, floor heating, air heating or a combination of these.
Air vent
To prevent corrosion and problems with operation, heating and air-conditioning systems must be constructed so that air can be removed both when the system is filled and during subsequent operation.
Airlift pump
The airlift pump – also called mammoth pump – exploits the increase of the oxygen intake in water under pressure.