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The LEE CHEK
The Lee Chek is offered in three basic configurations:

• Ø 0.187 and a 0.250 inch diameter axial flow ball-type designed for 3000 psi systems and available screened and unscreened, forward and reverse flowing.
• Ø 0.187 and a 0.343 inch diameter with convenient side exit porting and enhanced silt resistance. The 0.187 inch diameter is available screened and unscreened, with forward flow only for 4000 psi systems. The 0.343 inch diameter is available unscreened, with reverse flow only for 5000 psi systems.
• Ø 0.187 and a 0.250 inch diameter Zero Leak, poppet-style, axial flow design for 3000 psi systems. Both sizes are available in forward and reverse flow directions with a choice of two different elastomers. The 0.187 inch diameter is available screened and unscreened. The 0.250 inch diameter is unscreened.

LO-LOHM CHEKS
Lee Lo-Lohm Cheks are poppet-style, high flow-gain check valves that are wide open at 15 psid, and offer the lowest Lohm rate. They come in 0.187, 0.250, 0.375 and 0.500 inch diameters, in both forward and reverse flow directions to meet almost any space requirement. 440C CRES versions are available for all sizes. Screens are available on the 0.187 inch. These miniature all-metal checks are rated for 3000 psi system pressure (except the 0.187 inch and the 0.250 inch 440C model which are rated for 4000 psi systems).

Hi-Q CHEKS
Lee Hi-Q Chek valves offer the greatest feasible flow capacity for valve cartridges between 1/2 and 1 inch in diameter. The valves feature a unique cage and poppet assembly that maximizes flow capacity at an effectively low cost. A robust design and 100% performance testing ensures consistent, long term performance in 4000 psi systems.

HIGH PRESSURE CHEKS
Lee High Pressure Cheks are poppet-style valves for up to 8000 psi systems. They are offered in six sizes, starting with the micro-miniature 0.125 inch diameter, up through the 0.500 inch diameter. The 0.156 inch diameter model is available in a forward flow direction. All other sizes are available in both forward and reverse flow directions. Screens are available on the 0.125 inch diameter and the 0.187 inch diameter valves.

PILOT OPERATED CHEKS
The Lee Pilot Operated Chek is an all metal, pressure piloted to open check valve. It is a 0.250 inch diameter, poppet-style valve designed for 3000 psi systems.