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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.
Water enters at right, fills the trap, and continues left. Inverted siphoning occurs below the line "A". Examples of traps. 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 ...
A trap primer automatically injects water into a trap, maintaining a water seal to keep sewer gas out of buildings. It must be installed in an easily accessible place for adjustment, replacement, and repair. A trap primer, a specialized valve, is usually connected to a clean-water supply in addition to a DWV system. [21]
Photo Finish Smooth & Blur Oil-Free Foundation Primer Gels and serums are a great option for oily skin types that typically can't handle the feeling or heaviness of a cream or moisturizer.
The same goes for deep-fried turkey—pull it out of the oil briefly to insert the thermometer. When grilling, make sure to check the temperature on the side facing away from the heat source.
The Air Change Index (ACI) of a solvent is an indication of the margin of safety of a solvent. The lower the ACI, the less air turnover needed. [2] [3] The ACI is calculated based on the amount of solvent in the primer, the volume of the room to be primed, the volatility of the solvent and the amount of primer to be applied.
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