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4820-00-021-2968

Safety Relief Valve

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Official Item Classification

Name
Safety Relief Valve
(NSN) National Stock Number
4820-00-021-2968
(FSG) Federal Supply Group
48 Valves
(FSC) Federal Supply Classification
4820 Nonpowered Valves
(INC) Item Name Code
05488
(FIIG) Federal Item Identification Guide
A046B0
Date
04/27/1967 (59 years ago)

stem flow control device, 2a 1st end thread class, 250.0 fahrenheit single response maximum operating temp, right-hand 1st end thread direction, 0.875 inches 1st end nominal pipe size accommodated

Specs & Compatibility

Nominal Pipe Size Accommodated

0.875 inches 1st end

Thread Class

2a 1st end

Thread Direction

right-hand 1st end

Flow Control Device

stem

Maximum Operating Temp

250.0 fahrenheit single response

Connection Style

reduced socket 2nd end

Connection Style

plain,optional end(pipe) 1st end

Valve Operation Method

manual

Connection Type

threaded internal pipe 1st end

Connection Type

unthreaded internal pipe 2nd end

Thread Quantity Per Inch

14 1st end

Maximum Operating Pressure

6000.0 pounds per square inch single response

Nominal Thread Size

0.875 inches 1st end

Part Name Assigned By Controlling Agency

valve, shutoff

Material

steel comp 303 body

Material

steel comp 303 stem

Material Document And Classification

aisi 30300 assn std 1st material response body

Material Document And Classification

aisi 30300 assn std 2nd material response stem

Style Designator

straight thru

Thread Series Designator

unf 1st end

Furnished Items And Quantity

1 handle

Regulatory Compliance

Precious Metals Indicator
A

Item does not contain precious metal.

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

0005488

Related Hardware Products

Part Number Description
2528657 Safety Relief Valve
BC949T Safety Relief Valve
BC949T-2Q Safety Relief Valve

Frequently Asked Questions

What is the FSCG of the NSN 4820-00-021-2968?
The FSCG of the NSN 4820-00-021-2968 is 4820
Does the NSN 4820-00-021-2968 have a Schedule B code assigned?
Yes, the Schedule B code is 8481400000
Does NSN 4820-00-021-2968 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 4820-00-021-2968 contain precious materials?
Item does not contain precious metal.
Does NSN 4820-00-021-2968 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 4820-00-021-2968 was assigned to the Federal Catalog?
It was assigned 59 years ago, on Thu, Apr 27, 1967