The Lee Company’shigh pressure 156 Lee Chek is the latest addition to the company”sfield-proven, miniature check-valve family. Weighing only 0.7 gramsnominal, the 0.156″ diameter valve is nearly 2.5 times more efficientthan other high-pressure check valves of similar size. The installedenvelope is less than half that of a 0.187″ diameter high-pressurecheck valve. Available in a forward flow configuration, the valve isconstructed entirely of stainless steel, and features a hard,metal-to-metal seat for durability and long life. Each valve is100-percent tested and inspected to ensure reliable, consistentperformance.  Maximum working pressure is 5,000 PSID.