Company Profile

The Lee Co.

The Lee Co. is a supplier of miniature, precision fluid control products to a wide range of industries including aerospace, formula 1 racing, oil exploration, automotive and off-highway equipment and medical/scientific instruments.

Company Info

860-399-6281, 800-533-7584
Technical Center, 2 Pettipaug Rd.
Westbrook, CT 06498-0424


  • in Check Valves

    Lee supplies check valves in a variety of sizes and in forward or reverse flow, and with zero leak, low cracking pressure, no valve noise or wear and screens. Lee Lo-Lohm Cheks are poppet-style, high flow-gain styles with the lowest Lohm rate, in sizes of 0.187, 0.250, 0.375 and 0.500 inch diameters, and in both forward and reverse flow directions. Lee Hi-Q Chek types are compatible with valve cartridges between 1/2 and 1 inch in diameter and also feature a unique cage and poppet assembly.

  • in High Pressure Check Valves

    The Lee Co. is a supplier of high pressure check valves. These are poppet-style high pressure check valves for systems requiring up to 8000 psi and are offered in six sizes. The micro-miniature comes in 0.125 to 0.500 inch diameter models. The 0.156 inch diameter model is available only in a forward flow direction. All other sizes are available in both forward and reverse flow. The 0.125 and 0.187 inch diameter high pressure check valves are available with screens.

  • in Miniature Check Valves

    Lee manufacturers two types of check valves, standard insert and restrictor, for installation in either metal or plastic, to combine hydraulic systems into a single, accurate flow. Insert valves are available in both forward and reverse flows, in either axial or side exit styles and are designed for hydraulic and brake fluids, fuel and petroleum products. Lee restrictor check valves are 5.5mm, cartridge style.

  • in Miniature Pressure Relief Valves

    The Lee Co. (Industrial Microhydraulics Div.) offers miniature pressure relief valves for metal and plastic applications. Pressure relief valves for installation into metal are available in forward and reverse flow directions in two sizes: 5.5mm and 8.0mm. Pressure relief valves for installation into plastics feature simple, press-in installation. These valves are available in 2.5, 5.5, and 8.0mm (with corresponding flow capabilities).

  • in Miniature Solenoid Valves

    Lee manufactures and supplies miniature solenoid valves for repeatable dispensing of liquids within ink jet printing equipment. Compatible with gases and mild liquids, the miniature valves feature response times up to .25 milliseconds, operating speeds up to 200 Hz, and operating pressures up to 30psig.

  • in Miniature Valves

    The Lee Co., (Industrial Microhydraulics Division) manufactures a variety of miniature valves. Valve types include: shuttle valves, restrictor check valves, relief valves, calibrated orifices, flow controls, and check valves. Valves are constructed to be installed into both metal and plastic and have a variety of sizing options, including: 2.5mm, 5mm, 5.5mm, and 8mm. Applications include: hydraulic fluids, brake fluids, fuels, oils, medical disposable applications, manifold simplification, etc. Valves are 100% factory tested for flow and leakage to ensure consistent, long term performance. Valves are made of 303, 302, 305, 416, and 440C stainless steel materials.

  • in Solenoid Valves

    Lee is a family operation manufacturing solenoid control and solenoid inert valves for fluid handling systems. Solenoid control valves feature small size with a life cycle of over 200 million cycles. These valves are often customized to meet OEM requirements. Types include 2-way piloting (non-inert), 3-way, 3-way (non-inert) and 3-way latching (non-inert). Solenoid inert valves are used in medical and scientific instrumentation applications where contamination is the main concern. These valves are also designed for OEM requirements. Types include 2-way, 2-way with injection port, 3-way, and 3-way for low turbulence.