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.

Omega Engineering, Inc. offers OMEGA FLO Series miniature solenoid valves for applications involving analysis technology, reliably handling difficult liquids such as acids, bases, pharmaceutical elements, and fluids in biotechnology processes. Valves have a pressure range of 0 to 30psi, and an orifice measurement of 1/16".