AGS drain cocks are for low-pressure applications. External seat and internal seat drain cocks provide leak-proof metal-to-metal seal with only hand tightening. Working temp (pressure): -65 degrees F to 250 degrees F (150 psi). Applications include water, air, gas, and fluids. AGS brass and steel fittings are comprised of Tube Nuts, Unions (Couplers), Adapters, Elbows, Tees, Bushings, Connectors, Grease, etc... AGS fittings are held to the strictest standards to perform flawlessly in their intended applications. Fittings are offered in a variety of packaging options, including: retail clamshells, bulk boxed, and plastic tray assortments.