Sealey On-Gun Air Pressure Regulator/Gauge AR01This on-gun air pressure regulator by Sealey is designed to ensure that you are using the right amounts of air pressure with your pressurised tools. Suitable for use with spray guns, this regulator comes with an easy-to-read display, which uses both numerals and a green, yellow, and red colour code that corresponds to all pressure levels. It comes with all the fittings needed to secure it in place.