PRODUCT DATA SHEET Valve combines the function of a pres- sure relief valve in parallel with a check valve into one easy to install insert. The relief valve function features a rugged Tungsten Carbide ball and a 440C seat for durability and long life. The re- maining components are constructed entirely of stainless steel. The 375 PRI/Chek Valve is available in a range of relief flow cracking pres- sures for system pressures up to free flow direction is only 220 Lohms (see reverse page for an explanation Each Lee PRI/Chek Valve is 100% tested and inspected in both flow di- rections to ensure reliable, consistent Relief Flow Direction Free Flow Direction Finish: All CRES Parts Passivateci. Pins are prewaxed. Do not degrease. Do not lubricate. pressure relief valve in parallel with a check valve. Durable tungsten carbide ball and Designed for system pressures Weighs only 24 grams Endurance tested to 100,000 relief flow and 500,000 free flow cycles INSTALLATION HOLE Relief Flow Direction: Leakage at Minimum Cracking Pressure: Leakage at Minimum Shutoff Pressure: Restriction at Minimum Recommended Valve Lift: Nominal System Pressure: System Peak Pressure: Nominal Weight: THE LEE COMPANY, 2 PETTIPAUG RD., P.O. BOX 424, WESTBROOK, CT 06498-0424

0.375 PRI/CHEK FLOW CURVE RELIEF FLOW DIRECTION FREE FLOW DIRECTION 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 calcula- tions, and confirmed by testing each component to establish...