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Designed as a passive alternative to pyrotechnic valves, this one-way latching valve features stainless steel construction, tungsten carbide balls, in-line mount assembly, and an elastomeric seal for tight leakage. It primarily functions as a fuel-flow prevention device in turbojet engines and is also used in engine bleed-air systems, launch vehicles, satellites, and spacecraft for flow prevention, venting, and actuation. The valve supports hydraulic and pneumatic systems, offers a flow range of 65–365 Lohms, includes AS -4 to -4 fitting end connections, and is 100% functionally tested.
| Characteristic | Specification |
|---|---|
| Latching Pressures | up to 120 PSID |
| Lohm Rates | 65 & 240 |
| Leakage | 1 x 10-5 SCCS Maximum on Ghe |
| Nominal Weight | Line Mount Configuration: 80 grams |
| Temperature Range | -65 F to 275 F |
| Test Fluid | MIL-PRF-7024 |
| Part | Material | Specification |
|---|---|---|
| Fitting | 304 CRES | AMS 5639 |
| Body | 15-5PH CRES | AMS 5659 |
| Poppet | 15-5PH CRES | AMS 5659 |
| Spring | 17-7PH | AMS 5678 |
| Balls | Tungsten carbide | - |
| Internal Seal | Fluorocarbon | - |
From plugs to solenoid valves, there’s a vast array of products that The Lee Company can offer. If you’d like to discuss the best solution for your specific application or to learn more about our capabilities, use-cases, or quality standards, contact your local Lee sales engineer.
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The Lee Company has developed the Lohm Laws for defining and measuring resistance to fluid flow. The Lohm is defined such that 1 Lohm will flow 100 GPM of water with a pressure drop of 25 psi at a temperature of 80°F.
Always verify flow calculations by experiment.
*There are many parameters to consider when determining V-Factor. Click here for more information.
