An electric converter for converting an alternating current into a direct current.

A variable area flow meter which consists of a tapered tube of glass with a float inside that is pushed up by flow and pulled down by gravity.

A physical object that is a pressure relieving device designed to burst at a calibrated pressure to prevent pressure in systems or vessels from reaching unsafe levels.

A compactor is a machine or mechanism used to reduce the size of waste material.

A 'device' intended to separate different types of substances.

A ring of conducting material which is attached to and rotates with a shaft, so that the electric current may be transferred to a stationary circuit through a fixed brush pressing against it.

A panel and a photovoltaic module whose main parts are solar cells.

A physical object that consists of two discs with equal thickness and outer diameter connected with a flat bar. One of the discs has a hole, while the other disc is without hole.

A filter that is separating solid particles from a fluid by passing the fluid through a wire mesh, screen or metal plates containing perforations or slits.

A switchgear and controlgear bearing a set of switches for connecting and disconnecting the various circuits of an electrical system, as of a telegraph, telephone, etc.

A vessel intended to contain fluid for storage. Typically a receiving or collecting function for further distribution. Typically with a vertical and cylindrical or square shape and a flat or conical bottom.

A transformer that, by electromagnetic induction, transforms a system of alternating voltage and current into another system of voltage and current usually of different values and at the same frequency for the purpose of transmitting electrical power.

An ac power supply unit that maintains a continuous supply of electric power to the equipment it protects.

A container intended for storage and/or processing of fluids.