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375 ZERO LEAK CHEK

375 ZERO LEAK CHEK

375 ZERO LEAK CHEK

Product catalog summary
Product Overview: The Lee Company's 375 Zero Leak Chek Valve is a miniature valve designed for high-pressure applications, capable of zero leakage from 5 to 5000 psid. It weighs 11 grams and has a diameter of 0.375 inches, with a flow capacity of 1.9 GPM at 25 psid. The valve is constructed entirely of stainless steel for durability and features an elastomeric seal for zero leakage.
Specifications: The valve is available in both forward and reverse flow configurations. It has a maximum Lohm rate of 45 when fully open and is endurance tested to 1,000,000 cycles. All metal components are passivated per AMS 2700, and the valve is 100% tested and inspected for performance reliability.
Materials: The valve components are made from 15-5PH and 17-7PH CRES materials, with elastomeric seats available in Fluorocarbon or EPDM, compliant with AMS and MIL specifications.
Installation and Maintenance: The valve's pins are prewaxed and should not be degreased or lubricated. It is designed for use with MIL-PRF-83282 fluid at 85°F.
Lohm System: The document introduces the Lohm system, a method for defining fluid resistance in hydraulic components, analogous to Ohms in electrical systems. The Lohm system simplifies calculations by compensating for discharge coefficients and dimensional tolerances. A free slide rule is available to assist with Lohm calculations.
Flow Calculations: The document provides formulas for calculating liquid flow using the Lohm system, with compensation factors for liquid density and viscosity. It includes a chart for units constant (K) for various flow and pressure units.
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Catalog excerpts

375 ZERO LEAK CHEK-1

PRODUCT DATA SHEET375 ZERO LEAK CHEK® The Lee Company’s new 375 Zero Leak Chek Valve is the latest addition to our field proven, miniature zero leak check valve family. Weighing only 11 grams, the .375 inch diameter zero leak check valve is capable of flowing 1.9 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. ■ Zero Leakage from 5 to 5000 psid ■ 45 Lohms max. full open restriction ■ Weighs only 11 grams ■ All metal components made from Stainless Steel ■ 100% Tested and Inspected ■ Endurance Tested to 1,000,000 cycles PIN 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 Chek Valve is 100% tested and inspected to ensure reliable, consistent performance. 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, CT 06498-0424 Tel: 860-399-6281 • Fax: 860-399-7037 • eMail: [email protected] www.theleeco.com

 Open the catalog to page 1
375 ZERO LEAK CHEK-2

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...

 Open the catalog to page 2

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.