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4820-01-079-0431

Valve Seat

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Official Item Classification

Name
Valve Seat
(NSN) National Stock Number
4820-01-079-0431
(FSG) Federal Supply Group
48 Valves
(FSC) Federal Supply Classification
4820 Nonpowered Valves
(INC) Item Name Code
22113
(FIIG) Federal Item Identification Guide
A15500
Date
06/25/1979 (47 years ago)

2.094 inches nominal body outside diameter, 0.350 inches nominal seat radius, 1.000 inches nominal flange seat to disk end height, 1.500 inches nominal body inside diameter, 2.751 inches nominal flange diameter

Specs & Compatibility

Flange Diameter

2.751 inches nominal

Body Outside Diameter

2.094 inches nominal

Body Inside Diameter

1.500 inches nominal

Seat Radius

0.350 inches nominal

Flange Seat To Disk End Height

1.000 inches nominal

Under Flange Height

0.970 inches nominal

Seal Accommodation Type

grooved

Seating Surface Shape

radial

Material

steel overall

Material Document And Classification

mil-s-18410,cl-b,cond a mil spec 2nd material response overall

Style Designator

plain flanged

Regulatory Compliance

Precious Metals Indicator
U

Precious metal content is unknown

Criticality Code
X

The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Hazardous Metals Indicator
N

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

Pseudo Item Name Code

0022113

Related Hardware Products

Part Number Description
509E196BCP3 Valve Seat
B708F18E Valve Seat

Frequently Asked Questions

What is the FSCG of the NSN 4820-01-079-0431?
The FSCG of the NSN 4820-01-079-0431 is 4820
Does the NSN 4820-01-079-0431 have a Schedule B code assigned?
Yes, the Schedule B code is 8481909090
Does NSN 4820-01-079-0431 require demilitarization?
Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.
Does NSN 4820-01-079-0431 contain precious materials?
Precious metal content is unknown
Does NSN 4820-01-079-0431 contain hazardous materials?
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
When the NSN 4820-01-079-0431 was assigned to the Federal Catalog?
It was assigned 47 years ago, on Mon, Jun 25, 1979