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Worldwide distributor of NSN parts and consumables located in the USA.

Check Valve

Model / MPN: MS21211-8 | NSN: 4820-00-528-2361
ITAR Registered seal

A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.

Product Details
NATO Stock Number
4820-00-528-2361
Sold in multiples of
1 EA
DEMIL
NO
Thread Class
3a 1st end
Thread Direction
Right-hand 1st end
Flow Control Device
Cone
Connection Style
Flared (tube) 1st end
Connection Type
Threaded external tube 1st end
Mounting Position
Horizontal or vertical
Thready Qty Per Inch (tpi)
20 1st end
Maximum Operating Pressure
450.0 pounds per square inch single response
Thread Size
0.500 inches 1st end
Seat Angle
37.0 degrees 1st end
Outside Diameter Tube Accommodated
0.312 inches 1st end
Media For Which Designed
Oxygen, gaseous single response
Test Data Document
81349-mil-v-7908 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.).
Thread Series Designator
Unf 1st end
Nondefinitive Specification/std Data
H style

Pricing and Availability

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MS21211-8 Cross Reference
  • AN6037-1
  • 4395
  • 9900A
  • 8148650
  • 2680M