PRECISION MICROHYDRAULICS PRODUCT DATA SHEET The Lee Company’s new 500 Zero Leak Lee Chek Valve is the latest addition to our field proven, miniature zero leak check valve family. Weighing only 24 grams, the .500 inch diameter zero leak check valve is capable of flowing 3.5 GPM at 25 psid. The seat in this check valve incorporates an elastomeric seal to achieve zero leakage. The metal components are constructed entirely of stainless steel for durability and long life. Available in forward and reverse flow configurations, this new check valve is ideal for high pressure applications with system pressures up to 5000 PSI. Each Zero Leak Lee Chek Valve is 100% tested and inspected to ensure reliable, consistent performance. FORWARD FLOW DIRECTION ■ Zero leakage from 5 to 5000 psid ■ 25 Lohms max. full open restriction ■ Weighs only 24 grams ■ All metal components made from stainless steel ■ 100% tested and inspected ■ Endurance tested to 250,000 cycles PIN —1 . 35 Finish: All CRES Parts Passivated per AMS 2700. Pins are prewaxed. Do not degrease. Do not lubricate. The Lee Company • 2 Pettipaug Road, PO Box 424, Westbrook, Connecticut 06498-0424 Tel: 860-399-6281 • Fax: 860-399-7037 • [email protected] • www.theleeco.com

LOHMS LAWS (liquids) Every engineer will be interested in our simple system of defining the fluid resistance of Lee hydraulic components. Just as the OHM is used in the electrical industry, we find that we can use a liquid OHM or "Lohm" to good advantage on all hydraulic computations. When using the Lohm system, you can forget about coefficients of discharge and dimensional tolerances on drilled holes. These factors are automatically compensated for in the Lohm calculations, and confirmed by testing each component to establish flow tolerances. The resistance to flow of any fluid control component can...