Edelmann Shut-Off Cocks are manufactured to the highest quality standards to ensure superior long-term performance. These rugged shut-off cocks feature solid brass construction with a brass handle. Working temperature range is -65 F to +250 F. 30 PSI maximum operating pressure. 1/4" tube compression fitting on one end, 1/8" male NPT on the other. For use with air, water, gas, and other fluids (not intended for natural gas, LPG, or lubricants). Founded in 1909 by Eric Edelmann to provide parts and accessories for the budding automotive industry, Edelmann Manufacturing continued to grow, adding a line of power steering hoses in 1959. The 1970's brought the addition of the Plews division and their lube equipment and air line products to the Edelmann family. Today, Plews & Edelmann is a leading designer, manufacturer and distributor of a broad range of automotive parts and tools sold to the vast majority of mass merchant and retail auto parts stores and wholesale automotive parts and industrial distribution outlets, worldwide.