Lee Products, who specialise in miniature components, has developed a range of flow restrictors and check valves which are among the smallest insert check valves available.
The latest addition to this range is a 250 zero leak check valve, which provides zero leakage flow control from 5 up to 3000 psid. Despite a diameter of only 0.250”, length of 0.80” and weighing just 3.8 grams, these valves provide flows of over 62 SLPM (air) at 25 psid. The maximum working pressure is 3000 psid. 250 Zero Leak Check valves are available in forward and reverse flow configurations and use an elastomeric seat to ensure zero leakage. Other components are constructed entirely of stainless steel.
Typical applications for these valves are in aerospace, oil tool, and industrial gas turbines; or wherever high-technology engineering applications demand critical flow control using the smallest and lightest components available.