An automatic pressure-actuated relieving device suitable for use either as a safety valve or relief valve, depending on application.

An automatic pressure-relieving device actuated by the static pressure upstream of the valve and characterized by full-opening pop action due to the huddling chamber. It is used for gas or vapour service.

The difference in pressure between the popping pressure and the reseating pressure of a safety valve.

The amount of steam, in kilograms per hour, a safety valves can discharge.

Prominent. Salient pole rotors have multiple pairs of poles in which the pole piece and windings are prominent and obvious.

The process of deposing of solid wastes in landfills by covering the waste with soil at the end of each day.

A pipe or conduit (sewer) intended to carry wastewater wastes from homes, businesses, and industries to the POTW (Publicly Owned Treatment Works). Storm water runoff or unpolluted water should be collected and transported in a separate system of pipes or conduits (storm sewers) to natural watercourses.

A system of horizontal and vertical piping that collects wastewater from floor drains, sinks, toilets and urinals. The sewage flows through the drainage piping to a central point of disposal.

Air that contains the maximum amount of moisture that it can hold at that temperature.

Steam that is fully saturated with latent heat and has no water particles present.

The vapour at a certain temperature and pressure that will condense, if the pressure or temperature is lowered.

The pressure at which vapour and liquid can exist at equilibrium at a given temperature.

The temperature at which a liquid boils for a given pressure.

A quantity that has magnitude only. Mass is an example of a scalar.

A deposit that forms on tubes reducing heat transfer efficiency.