What is a tool set with control valves used in soldering and brazing called?

The tool set with control valves used in soldering and brazing is commonly referred to as a torch. A torch provides a controlled flame that is essential for heating the materials being joined, such as metals in the case of brazing and soldering. The control valves allow the operator to regulate the mix of fuel and oxygen, which is crucial for achieving the right temperature and flame characteristics. This precision is vital for ensuring successful soldering or brazing without damaging the components.

The other tools listed serve different purposes; for example, a wrench is primarily used for gripping and turning nuts and bolts, a soldering iron is a hand-held device specifically used for applying heat to melt solder, and a clamp is used to hold materials in place during the joining process. However, none of these can perform the same function as a torch when it comes to providing a flame with adjustable control for soldering and brazing applications.