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

Engine Poppet Valve

Model / MPN: 40651 | NSN: 2810-00-037-3498
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
2810-00-037-3498
Sold in multiples of
DEMIL
NO
Head Style
Flat
Head Height
Between 0.1820 inches and 0.1920 inches
Chamfer Angle In Deg
45.0
Groove Diameter
Between 0.3590 inches and 0.3650 inches
Chamfer Length
0.0312 inches
Groove Width
Between 0.1560 inches and 0.1660 inches
Outside Diameter
Between 1.8390 inches and 1.8490 inches
Seat Angle In Deg
45.0
Stem Style
Grooved
Carbon Relief Groove
Not included
Neck Radius
0.3800 inches
Stem Length
Between 4.6140 inches and 4.6440 inches
Stem Diameter
Between 0.4330 inches and 0.4340 inches
Distance From Groove To Stem End
0.3200 inches
Material And Location
Cobalt alloy seat face
Material And Location
Steel head
Material And Location
Steel stem
Metallic Hardness Rating And Location
50.0 rockwell c tip
Fsc Application Data
Gasoline engine aircraft
40651 Series Parts

Pricing and Availability

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40651 Cross Reference