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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.
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.
The technical requirements are outlined in Forest Service Specification FS5100-1. All spark arresters meeting the requirements of 36 CFR 261.52 must be certified and listed in the USDA Forest Service Spark Arrester Guide. This guide is a comprehensive directory of all qualified products available in the United States, and is published biannually.
In an effort to reduce the greenhouse gas emissions that are causing climate change, the Department of Energy on proposed new energy-efficiency standards Monday for residential gas furnaces.
High efficiency condensing gas furnaces typically achieve between 90% and 98% AFUE. [3] A condensing gas furnace includes a sealed combustion area, combustion draft inducer and a secondary heat exchanger. The primary gain in efficiency for a condensing gas furnace, as compared to a mid-efficiency forced-air or forced-draft furnace, is the ...
Any oxygen gas content in the vacuum line or any leak in the vacuum line will result in liquid oxygen mixed with the target vapors, often with explosive results. When performed on a larger scale, this technique is called freeze-drying, and the cold trap is referred to as the condenser.
New requirements for fuel gas piping appliance shutoff valves, test pressure and overpressure protection devices; New tube fastener provisions for radiant heating and cooling; New requirements for residential compressed natural gas (CNG) fueling systems; New fire-extinguishing equipment and carbon monoxide detection requirements for exhaust systems
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