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A trap primer (or trap seal primer) is a plumbing device or valve that adds water to traps.The water seals in traps are needed to prevent sewer gases from entering buildings, but because this water is exposed to the air, it is subject to evaporation over time in infrequently used floor drains, leading to the release of sewer gas into the environment.
In plumbing, a trap is a U-shaped portion of pipe designed to trap liquid or gas to prevent unwanted flow; most notably sewer gases from entering buildings while allowing waste materials to pass through. In oil refineries, traps are used to prevent hydrocarbons and other dangerous gases and chemical fumes from escaping through drains.
The general appearance of this arrangement is as in Fig. 1 or Fig. 3, the center view, Fig. 2, shows the cardinal feature of this trap, that it contains a collector for silt, sand, or sediment which is not, as in most other traps of the time, carried out through the valve with the efflux of water. A steam trap is a device used to discharge ...
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A flame arrester during testing A flame arrester made for a 91 cm (36 inch) pipe weighing 10 tons. A flame arrester (also spelled arrestor), deflagration arrester, [1] or flame trap [2] is a device or form of construction that will allow free passage of a gas or gaseous mixture but will interrupt or prevent the passage of flame.
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The Ancient and Primitive Rite, also called the Order of the Ancient and Primitive Rite of Memphis-Mizraim, is a Masonic Rite first popularized by John Yarker. It has been considered irregular by Masonic organisations such as the United Grand Lodge of England since at least 1860.
The Ancient and Accepted Scottish Rite of Freemasonry is a rite within the broader context of Freemasonry.It is the most widely practiced Rite in the world. [1] [2] [3] In some parts of the world, and in the Droit Humain, it is a concordant body and oversees all degrees from the 1st to 33rd degrees, while in other areas, a Supreme Council oversees the 4th to 33rd degrees.