Is a pump with no moving parts that uses a submerged compressed air line to inject air into a vertical discharge pipe in order to create bubbles that reduce the liquid column weight and lifts the liquid to the surface by the air-water buoyancy differential.

Is a dual-function device used in piping systems that releases trapped air automatically during normal operation and prevents vacuum conditions by allowing air to enter the system.

Is a dual-function device used in piping systems that releases trapped air automatically during normal operation and prevents vacuum conditions by allowing air to enter the system.

A trap which, by a water seal, prevents foul air from rising from sinks, wash basins, drains, sewers etc.

A trap which, by a water seal, prevents foul air from rising from sinks, wash basins, drains, sewers etc.

Is a type of valve used in piping systems to automatically release accumulated air and gas from the system while it is under pressure, and to allow air to re-enter the system when it is being drained, to prevent vacuum formations and potential damage.

A physical object that is intended to process and annunciate alarms.

A physical object that is intended to process and annunciate alarms.

An electric generator for the production of alternating current and voltage.

An electric generator for the production of alternating current and voltage.

An electric motor driven by alternating electric current.

An electric motor driven by alternating electric current.

A physical object for increasing the power of a signal.

A physical object for increasing the power of a signal.

Is an artefact intended to retrieve a material at a particular location and inserted into something so as to test its conditions.

Is an artefact intended to retrieve a material at a particular location and inserted into something so as to test its conditions.

A detecting instrument that is intended to analyse a substance for its composition and/or properties.

A detecting instrument that is intended to analyse a substance for its composition and/or properties.

A detecting instrument for recording wind speed, and possibly wind direction.

A detecting instrument for recording wind speed, and possibly wind direction.

A physical object that is capable of emitting positive charge carriers to and/or receiving negative charge carriers from the medium of lower conductivity.

A physical object that is capable of emitting positive charge carriers to and/or receiving negative charge carriers from the medium of lower conductivity.

An electromagnetic transducer that is a physical object made of conducting material which is capable of radiating or receiving electromagnetic waves.

An electromagnetic transducer that is a physical object made of conducting material which is capable of radiating or receiving electromagnetic waves.