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

Engine Poppet Valve

Model / MPN: AS2991 | NSN: 2815-00-084-0534
ITAR Registered seal

A mushroom or tulip-shaped item having a circular head with a conical face and an extended stem used to regulate the flow of incoming fuel-air mixture or air into the combustion chamber or exhaust gases from the combustion chamber of a reciprocating internal combustion engine.

Product Details
NATO Stock Number
2815-00-084-0534
Sold in multiples of
* special requirements. EA
DEMIL
NO
Head Style
Flat
Head Height
0.1950 inches
Chamfer Angle In Deg
45.0
Chamfer Length
0.0312 inches
Outside Diameter
1.6470 inches
Seat Angle In Deg
43.0
Stem Style
Double grooved
Carbon Relief Groove
Not included
Neck Radius
0.3281 inches
Stem Length
5.7812 inches
Stem Diameter
0.3700 inches
Distance From First Groove To Stem End
0.2812 inches
Distance From Second Groove To Stem End
0.4375 inches
First Groove Diameter
0.3040 inches
Second Groove Diameter
0.3040 inches
First Groove Width
0.0625 inches
Second Groove Width
0.0625 inches
Material And Location
Steel stem or steel, corrosion resisting head

Pricing and Availability

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AS2991 Cross Reference
  • 2M6403
  • IPD2M6403