Soldering uses alloys that melt below 840°F to join metals. Molten solder fills the space between surfaces to be joined, adheres to the surfaces, and solidifies. Typical soldering steps include: ...

Q. My house has old galvanized iron water pipes. The water pressure is bad at many faucets and almost nothing in the kitchen. The volume of hot water that comes out of any faucet is especially low. I ...