What shutoff valve type is known as a "Copper-by-compression" straight-stop?

The "Copper-by-compression" straight-stop shutoff valve is specifically designed to connect to copper piping using a compression fitting. This type of valve utilizes a compression mechanism that allows it to form a tight seal around the copper pipe without requiring any soldering or welding, making it a popular choice in plumbing applications.

The compression fitting works by tightening a nut onto a ferrule that compresses around the copper pipe, creating a leak-proof seal. This allows for ease of installation and maintenance, particularly in situations where soldering may be impractical or when a temporary connection is needed.

In terms of overall function, straight-stop valves are used to control the flow of water to specific fixtures like sinks or toilets, allowing for easy maintenance in case of repairs. The specific mention of "Copper-by-compression" signifies that this valve is meant exclusively for use with copper piping, ensuring optimal compatibility and performance.

Understanding the function and application of different types of shutoff valves is essential for proper plumbing practices, particularly when selecting the right valve for a particular situation.