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Lee shut-off valves function as normally-open check valves used to shut off flow under specified conditions. We offer two types of shut-off valves – bypass valves and flow fuses. Bypass valves are piloted to shut off the flow, while flow fuses shut off flow when the flow rate through the valve reaches a defined limit.
Flow fuses are found throughout critical spaceflight systems. In the event of a system breach, the fuse will sense an increase in flow rate and shut off, preserving fluid power and functions upstream of the fuse. A flow fuse can also function as a vent valve to purge trapped air or vapor out of a fluidic system, such as a fuel system during engine start-up.
Lee shut-off valves are known for their miniature size (which helps save weight and space in critical applications), easy installation, and precise, reliable performance. Custom-designed versions incorporating elastomeric or polymeric seals for improved leakage control in pneumatic applications are available.
Partner with The Lee Company and get much more than just a supplier of top-quality fluid control products. Find solutions, maximize productivity, and drive efficiency across your operations by using our literature, case studies, and videos. To learn more, check out these space-specific resources.
Always verify flow calculations by experiment.
*There are many parameters to consider when determining V-Factor. Click here for more information.
