The Knowledge of DOUBLE UNION BALL VALVE

A double union ball valve is a type of plumbing valve used to control the flow of liquids. It is called a "double union" valve because it has two unions (connections) that allow it to be attached to pipes in two different places, making it easier to install and remove without having to disassemble the entire piping system.

The valve itself is a ball-shaped component with a hole through the center. When the valve is open, the hole is aligned with the flow of liquid, allowing it to pass through. When the valve is closed, the ball rotates 90 degrees, sealing off the hole and stopping the flow of liquid.

Double union ball valves are commonly used in a variety of applications, including water supply systems, aquariums, hydroponic gardens, and other plumbing systems. They are known for their ease of use, durability, and reliability.

It's important to note that double union ball valves come in a range of materials, including PVC, ABS, and brass, and it's important to choose a material that is compatible with the liquid being transported and the conditions of the system it is being used in.