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2. Trap primer - Wikipedia

   en.wikipedia.org/wiki/Trap_primer

   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.

3. Stain-blocking primer - Wikipedia

   en.wikipedia.org/wiki/Stain-blocking_primer

   The below calculated ACIs were done on solvent-based primer containing 350 g/L of solvents and the water-based primer containing 50 g/L of butyl glycol. The values on this chart indicate that the use of mineral spirits based primers would need 6 to 7 air changes per hour requiring significant ventilation. The use of low-odor, isoparaffinic ...

4. Primer (paint) - Wikipedia

   en.wikipedia.org/wiki/Primer_(paint)

   A water-based primer, used primarily on wood. A primer (/ ˈ p r aɪ m ər /) or undercoat is a preparatory coating put on materials before painting.Priming ensures better adhesion of paint to the surface, increases paint durability, and provides additional protection for the material being painted.

5. Piping and plumbing fitting - Wikipedia

   en.wikipedia.org/wiki/Piping_and_plumbing_fitting

   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]

6. Primer - Wikipedia

   en.wikipedia.org/wiki/Primer

   Primer (gasoline engine), a device on some petrol engines used to prime the engine with gasoline before starting it; Primer (molecular biology), a nucleic acid strand (or related molecule) that serves as a starting point for replication; Money-creation primer; Trap primer, a plumbing device or valve that adds water to traps

7. These Are the *Only* Face Primers That Keep My Makeup ... - AOL

   www.aol.com/only-face-primers-keep-makeup...

   Water-based primers: Formulated with humectants similar to a serum (i.e., hyaluronic acid, panthenol, glycerin, etc.), these primers add hydration, as well as create a tacky surface for your ...