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4820-00-032-4763

Check Valve

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Official Item Classification

Name
Check Valve
(NSN) National Stock Number
4820-00-032-4763
(FSG) Federal Supply Group
48 Valves
(FSC) Federal Supply Classification
4820 Nonpowered Valves
(INC) Item Name Code
05487
(FIIG) Federal Item Identification Guide
A530B0
Date
11/01/1972 (53 years ago)

3a 2nd end thread class, right-hand 1st end thread direction, poppet flow control device, 3a 1st end thread class, right-hand 2nd end thread direction

Specs & Compatibility

Thread Class

3a 1st end

Thread Class

3a 2nd end

Thread Direction

right-hand 1st end

Thread Direction

right-hand 2nd end

Flow Control Device

poppet

Maximum Operating Temp

275.0 fahrenheit single response

End Item Identification

ah-1w advance attack helicopter

Connection Style

flared (tube) 1st end

Connection Style

flareless 2nd end

Valve Operation Method

automatic

Connection Type

threaded external tube 2nd end

Connection Type

threaded external tube 1st end

Mounting Position

horizontal or vertical

Thread Quantity Per Inch

20 2nd end

Thread Quantity Per Inch

20 1st end

Maximum Operating Pressure

3000.0 pounds per square inch single response

Nominal Thread Size

0.437 inches 1st end

Nominal Thread Size

0.548 inches 2nd end

Seat Angle

12.0 degrees 2nd end

Seat Angle

37.0 degrees 1st end

Criticality Code Justification

feat

Nominal Outside Diameter Tube Accommodated

0.250 inches 2nd end

Nominal Outside Diameter Tube Accommodated

0.250 inches 1st end

Special Features

weapon system essential

Material

aluminum alloy seat

Material

aluminum alloy body

Material

steel flow control device

Material Document And Classification

mil-s-7720,comp 303s mil spec single material response flow control device

Material Document And Classification

qq-a-200/3, alloy 2024, t4 fed spec single material response body

Material Document And Classification

qq-a-225/6,alloy2024,t351 fed spec single material response packing

Media For Which Designed

hydraulic fluid, petroleum base single response

Style Designator

straight thru

Thread Series Designator

unf 1st end

Thread Series Designator

unjf 2nd end

Regulatory Compliance

Precious Metals Indicator
A

Item does not contain precious metal.

Criticality Code
Y

The item does not have a nuclear hardened feature but does have other critical feature(s) such as tolerance, fit restrictions 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

0005487

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Frequently Asked Questions

What is the FSCG of the NSN 4820-00-032-4763?
The FSCG of the NSN 4820-00-032-4763 is 4820
Does the NSN 4820-00-032-4763 have a Schedule B code assigned?
Yes, the Schedule B code is 8481309000
Does NSN 4820-00-032-4763 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 4820-00-032-4763 contain precious materials?
Item does not contain precious metal.
Does NSN 4820-00-032-4763 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 4820-00-032-4763 was assigned to the Federal Catalog?
It was assigned 53 years ago, on Wed, Nov 1, 1972