4820-00-563-7721

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Vacuum Breaking Valve

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Official Item Classification

Name: Vacuum Breaking Valve
(NSN) National Stock Number: 4820-00-563-7721
(FSG) Federal Supply Group: 48 Valves
(FSC) Federal Supply Classification: 4820 Nonpowered Valves
(INC) Item Name Code: 08101
(FIIG) Federal Item Identification Guide: A07100
Date: 11/19/1974 (51 years ago)

threaded external tube first end connection type, 0.750 inches nominal first end outside diameter tube accommodated, single connection, straight flow body style, flared first end style designator, air media for which designed

Specs & Compatibility

Body Style

single connection, straight flow

Media For Which Designed

air

First End Connection Type

threaded external tube

First End Style Designator

flared

First End Outside Diameter Tube Accommodated

0.750 inches nominal

First End Thread Class

First End Thread Direction

right-hand

First End Seat Angle In Deg

37.0

Flow Control Device

poppet

End Connection Quantity

Temp Adjustability

not adjustable

Body Material

steel comp 316

Material Document And Classification

qq-s-763,cl 316, cond b fed spec single material response

Regulatory Compliance

Precious Metals Indicator

Item does not contain precious metal.

Criticality Code

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

Hazardous Metals Indicator

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

0008101

Related Hardware Products

Part Number	Description
515930-2	Vacuum Breaking Valve
8821-1	Vacuum Breaking Valve

Frequently Asked Questions

What is the FSCG of the NSN 4820-00-563-7721?

The FSCG of the NSN 4820-00-563-7721 is 4820

Does the NSN 4820-00-563-7721 have a Schedule B code assigned?

Yes, the Schedule B code is 8481809050

Does NSN 4820-00-563-7721 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 4820-00-563-7721 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-563-7721 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 4820-00-563-7721 was assigned to the Federal Catalog?

It was assigned 51 years ago, on Tue, Nov 19, 1974