The fuel, hydraulic, and pneumatic systems used in motorsport vehicles require precise control of flow rate and pressure conditions. The Lee Company offers a range of valves with additional functionality for applications when a basic flow restrictor is not enough.
Flow metering valves are an interesting category because not all flow metering valves perform the same function.
Lee Restrictor Cheks combine the function of a restrictor in series with a check valve into one miniature package. This provides considerable size and weight savings with no loss in performance. Lee directional flow controls provide metered flow in one direction and free flow in the opposite direction. Dual metering flow controls offer different metered flow rates in each direction. By contrast, Lee Floserts – while still incredibly small and lightweight – provide a constant flow over a wide range of differential pressures by incorporating both fixed and variable metering orifices.
In short, Lee flow metering valves generally combine the function of two components in a single package. Still, they can provide functionality that’s greater than the sum of its combined parts. The space and weight savings they provide makes these valves perfect for controlling the tiny actuators used for the rear wing, clutch engage and release, steering, and variable inlet trumpets and turbine blades.
Our flow metering valves are robust products offering precise performance in miniature, lightweight envelopes. They are available in a variety of sizes and configurations to meet the specific needs of your application.
In addition to our wide range of available catalog items, half of what Lee supplies is customized for the particular needs of a unique application. Whether you require a different flow rate, pressure range, or envelope, contact us to develop the right solution, working engineer to engineer.
The Lee Restrictor Chek® is a miniature 0.187 inch diameter valve that provides metered flow in one direction and no flow in the other direction. These components are functionally equivalent to a check valve in series with a flow restrictor. Combining these two products in a single package equates to significant savings in size, weight, and cost. The components are available standard in metered Lohm rates from 1000 – 10,000 Lohms, with an integral safety screen to protect the orifice.
Lee directional flow controls provide metered flow in one direction and free flow in the opposite direction. Occasionally referred to as one-way restrictors, these components are functionally equivalent to a check valve in parallel with a flow restrictor. They are available in four diameters (ranging from 0.87 to 0.500 of an inch) with metered Lohm rates from 40 up to 20,000 and rated for 3000, 5000, and 8000 psi systems. Again, these flow controls allow manufacturers to achieve multidimensional savings by combining two components.
The Lee Company’s dual metering flow control valves are two-way restrictors that allow a designer to specify a different metered flow rate in each direction. These valves are ideal for high pressure hydraulic applications with system pressures up to 5000 psi. They feature all stainless steel construction for durability and long life and are available in 0.187 and 0.281 inch diameter models. Each Lee dual metering flow control is 100% tested in both flow directions to ensure reliable, consistent performance.
Because each direction can be specified differently, our dual metering flow controls can achieve a nearly infinite combination of metered flow rates. All these components are supplied as custom items to meet the specific needs of an application.
Lee Floserts provide pressure compensated flow control. In other words, the flow will remain constant across a wide range of differential pressures. A variable metering orifice automatically adjusts by sensing the flow rate in terms of differential pressure across a fixed orifice. Metered flow rates from 0.01 GPM up to 5 GPM are available. Floserts are available with the Lee locking end for installation in diameters from 0.250 to 0.500 of an inch as well as a 0.687 inch threaded configuration. High pressure versions for operating pressures up to 5000 psi are available.
Partner with The Lee Company and get much more than just a supplier of top-quality fluid control products. Our reliable technical support team is available every step of the way to help you find solutions, maximize productivity, and drive efficiency across your operations. Check out these resources specific to the motorsports industry to learn more
Always verify flow calculations by experiment.
Always verify flow calculations by experiment.
*There are many parameters to consider when determining V-Factor. Click here for more information.