Quarter turn angle valve are in compliance with US standard and designed for residential use with water, suitable for plumbing system. They open or shut off the water flow to household plumbing fixtures like faucets, toilets and other fixtures. The quarter turn shut off valve provides an easy and maintenance free shut off for your fixtures. Ideal for maintenance and repair without having to shut-off water to the entire home. Faster install time and ease of use reduces installation errors. No special tools, crimping, glue or soldering is needed.