4820-00-990-9043

Find complete technical information, availability, and procurement data for: 4820-00-990-9043
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-990-9043

Item Name Code

10958

Assigment Date

03/23/1967 (59 years ago)

A valve having a flat or tapered disk (gate) which moves transversely to the axis of flow by rotating or sliding movements of the stem to open or close the orifice. It may also contain an oval or rectangular shaped slide which may be manually, motor, or pressure operated through the means of an arm or arm assembly. The body flange may be designed to accommodate tube type connectors. It may or may not contain thermal relief features. Includes valve (gate) specifically designed for the control of fluid systems in aircraft or missiles.

external seat for gasket seal first end style designator, steam media for which designed, single connection straight thru body style, 0.875 inches nominal first end outside diameter tube accommodated, threaded external tube first end connection type

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Body Style: single connection straight thru
Media For Which Designed: steam
First End Connection Type: threaded external tube
First End Style Designator: external seat for gasket seal
First End Outside Diameter Tube Accommodated: 0.875 inches nominal
First End Thread Class: 2a
First End Thread Direction: right-hand
First End Seat Angle In Deg: 37.5
Flow Control Device: disk, plug type
End Connection Quantity: 1
Valve Venting Design Type: atmospheric
Valve Relief Design Type: pressure
Material: aluminum alloy 2024 body
Material: aluminum alloy 2024 seat
Material Document And Classification: qq-a-268, t3 fed spec single material response body
Material Document And Classification: qq-a-250/4, alloy 2024, t3 fed spec single material response seat
Surface Treatment: anodize outside
Surface Treatment Document And Classification: mil-a-8625, type 2 mil spec single treatment response outside

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
10215194	Gaseou Pressure Equalizing Valve
HV194	Gaseou Pressure Equalizing Valve

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 4820-00-990-9043?

The FSCG of the NSN 4820-00-990-9043 is 4820

Does the NSN 4820-00-990-9043 have a Schedule B code assigned?

Yes, the Schedule B code is 8481809050

Does NSN 4820-00-990-9043 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 4820-00-990-9043 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-990-9043 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 4820-00-990-9043 was assigned to the Federal Catalog?

It was assigned 59 years ago, on Thu, Mar 23, 1967