A Compression 15mm Red Handle T-Bar Butterfly Valve is a valve used in plumbing systems to control the flow of water or other fluids. It features a 15mm compression fitting, which allows it to be easily connected to pipes without the need for welding or soldering. The valve has a red T-bar handle, which is used to manually open or close the valve. The butterfly valve mechanism consists of a disc that rotates to regulate flow. The T-bar handle makes it simple to operate, providing a clear indication of whether the valve is open or closed. This type of valve is commonly used in residential and commercial plumbing applications for regulating fluid flow.