A UPVC true union ball valve is a type of valve that can be used to control the flow of liquids in a system:

EVA UPVC true union ball valve is a type of valve, commonly used for fluid control, that features a union connection on both ends, allowing easy installation, maintenance, and repair without disrupting the entire pipeline. Here is more detailed explanation:

How it works A true union ball valve has a rounded component inside that allows liquids to pass through in one direction. When liquid tries to pass back through, the valve closes. • Features True union ball valves are easy to install and remove without cutting the pipeline. They can also be disassembled for repairs or replacements without having to take the entire system apart. • Uses True union ball valves are often used in irrigation systems, pool plumbing, and sprinkler systems. • Materials True union ball valves can be made from a variety of materials, including UPVC, EPDM, and PTFE. • Seal materials The seals in a ball valve come into contact with the liquid passing through the valve