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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. Tubes and primers for ammunition - Wikipedia

   en.wikipedia.org/wiki/Tubes_and_primers_for...

   The first type has two insulated wires led into the interior and attached to two insulated brass cones which are connected by a wire "bridge" of platinum silver. [2] This bridge is surrounded by a priming composition of guncotton dust and mealed powder and the remainder of the tube is filled with powder. When an electric current passes through ...

4. P-trap - Wikipedia

   en.wikipedia.org/?title=P-trap&redirect=no

   This page was last edited on 8 July 2010, at 17:55 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply ...

5. Trap (plumbing) - Wikipedia

   en.wikipedia.org/wiki/Trap_(plumbing)

   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.

6. Powder-actuated tool - Wikipedia

   en.wikipedia.org/wiki/Powder-actuated_tool

   A powder-actuated tool (PAT, often generically called a Hilti gun or a Ramset gun after their manufacturing companies) is a type of nail gun used in construction and manufacturing to join materials to hard substrates such as steel and concrete.

7. Percussion cap - Wikipedia

   en.wikipedia.org/wiki/Percussion_cap

   Percussion caps have been manufactured in various sizes to fit snugly over different sized nipples. Nipples for 4.5mm and 6mm percussion caps. The percussion cap, percussion primer, or caplock, introduced in the early 1820s, is a type of single-use percussion ignition device for muzzle loader firearm locks enabling them to fire reliably in any weather condition. [1]

8. Grease trap - Wikipedia

   en.wikipedia.org/wiki/Grease_trap

   Grease trap for greywater in Lima, Peru. A grease trap (also known as grease interceptor, grease recovery device, grease capsule and grease converter) is a plumbing device (a type of trap) designed to intercept most greases and solids before they enter a wastewater disposal system.

9. Cartridge (firearms) - Wikipedia

   en.wikipedia.org/wiki/Cartridge_(firearms)

   A cartridge, [1] [2] also known as a round, is a type of pre-assembled firearm ammunition packaging a projectile (bullet, shot, or slug), a propellant substance (smokeless powder, black powder substitute, or black powder) and an ignition device within a metallic, paper, or plastic case that is precisely made to fit within the barrel chamber of ...