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2. Solder alloys - Wikipedia

   en.wikipedia.org/wiki/Solder_alloys

   Soldering copper pipes using a propane torch and a lead-free solder. Solder is a metallic material that is used to connect metal workpieces. The choice of specific solder alloys depends on their melting point, chemical reactivity, mechanical properties, toxicity, and other properties. Hence a wide range of solder alloys exist, and only major ...

3. Piping and plumbing fitting - Wikipedia

   en.wikipedia.org/wiki/Piping_and_plumbing_fitting

   The welding of metals differs from soldering and brazing in that the joint is made without adding a lower-melting-point material (e.g. solder); instead, the pipe or tubing material is partially melted, and the fitting and piping are directly fused. This generally requires piping and fitting to be the same (or compatible) material.

4. Ball valve - Wikipedia

   en.wikipedia.org/wiki/Ball_valve

   A ball valve is a flow control device which uses a hollow, perforated, and pivoting ball to control fluid flowing through it. It is open when the hole through the middle of the ball is in line with the flow inlet, and closed when it is pivoted 90 degrees by the valve handle, blocking the flow. [1]

5. Proline - Wikipedia

   en.wikipedia.org/wiki/Proline

   The hydroxylation of proline by prolyl hydroxylase (or other additions of electron-withdrawing substituents such as fluorine) increases the conformational stability of collagen significantly. [20] Hence, the hydroxylation of proline is a critical biochemical process for maintaining the connective tissue of higher organisms.

6. Copper tubing - Wikipedia

   en.wikipedia.org/wiki/Copper_tubing

   Solder fittings are smooth and easily slip onto the end of a tubing section. The joint is then heated using a torch, and the solder is melted into the connection. When the solder cools, it forms a very strong bond that can last for decades. Solder-connected rigid copper is the most popular choice for water supply lines in modern buildings.

7. MAGA goes wild over Jill Biden’s very friendly encounter with ...

   www.aol.com/maga-goes-wild-over-jill-150426409.html

   “Jill Biden looks like she’s in love with the BOSS Trump. 100% confirmed she voted for Trump!” user AJ Huber wrote on X. “She voted for him. It’s settled science,” Bonchie chided .