Copper ball valve thick brass inner wire for tap water switch, water valve and water pipe valve. The outside thread with sealant for better sealing,Easy Installation in tight working spaces. It was widely used in irrigation systems, pipeline systems, oil and gas supply systems with different size and colours. Working medium: natural gas, liquefied petroleum gas, and each valve individually tested for maximum safety. Brass for corrosion resistance, ductility at high temperatures, and low permeability and valve requires no special tools. It is made of forged brass for higher corrosion resistance than steel and has a plastic-covered lever handle for on/off manual control. Do not over tighten. Can be used to give your tool full air flow to total shut-off. Designed for use on all pneumatic circuits and features a quick connect/disconnect positive seal.