RAM Company Check and Relief Valves are manufactured from precision ground-heat treated components, withstanding operational pressures up to 5000 psig. These types of mechanical valves are utilized in systems for flow restriction, pressure control, and pressure relief. Common applications for these types of valves include aircraft cabin pressure control and pressure relief on hydraulic systems. Pressure relief valves offer many design features, including the following: • Operating pressures from 0 to 5000 psig • Cracking pressures from 20 to 4500 psid • Low leakage • Flow rates up to 18 gpm Check valves design features include: • Operating pressures from 0 to 5000 psig • Low cracking pressures • Zero leakage