PRODUCT CAPABILITY SHEET THE LEE COMPANY EXTREME ENVIRONMENT ZERO LEAK CHEK TM The Lee Company introduces a new capability for zero leak check valves specifically designed for extreme environment applications found in the oil tool and aerospace industries. These capabilities include working pressures up to 15,000 psi and operating temperatures up to 400°F. These Extreme Environment Zero Leak Check Valves are constructed of corrosion-resistant stainless steels with NACE compliant materials available. A compliant polymeric seat material is used to achieve zero leakage in the checked direction. The valves are available in free flow forward and free flow reverse directions, with maximum cracking pressures of 2 and 8 psid. Sizes range from .187" to .500" in diameter, with free flow Lohm rates from 500 to 45 Lohms. Each Lee check valve is 100% tested and inspected to ensure reliable, consistent performance, eliminating the need for additional in-house testing. Zero leakage from 500 psi and greater Maximum working pressure of 15,000 psi Maximum operating temperature of 400°F 4 sizes available, as small as .187" diameter Free flow Lohm rates from 500 down to 45 Lohms Materials selected per application requirements FREE FLOW FORWARD COMMONLY USED SEAT MATERIALS* PTFE * Approximate dimensions * Other materials possible upon request. ' The Lohm is a measure of flow resistance. Additional information can be found on the reverse side, or by visiting www. theleeco. com ' Potential for higher pressures The Lee Company • 2 Pettipaug Rd., P.O. Box 424, Westbrook, CT 06498-0424 • Tel: 860-399-6281 • www.theleeco.com

LEE LOHM LAWS LOHM 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...