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4820-01-321-2221

Safety Relief Valve

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Official Item Classification

Name
Safety Relief Valve
(NSN) National Stock Number
4820-01-321-2221
(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
06/13/1990 (36 years ago)

disk flow control device, threaded bonnet attachment method, inside spring bonnet type, spring disk loading method, streamlined with one brazing ring (tube) all ends connection style

Specs & Compatibility

Flow Control Device

disk

Bonnet Type

inside spring

Bonnet Attachment Method

threaded

Disk Loading Method

spring

Connection Style

streamlined with one brazing ring (tube) all ends

Valve Operation Method

automatic

Connection Type

unthreaded internal tube all ends

Adjustable Pressure Range

+65.0 to 100.0 pounds per square inch

Nominal Outside Diameter Tube Accommodated

1.000 inches all ends

Material

copper alloy body

Style Designator

angle

Replacement For

Part Number Description
4820-01-104-3969 No Name Available 06/01/2002

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
1384 1IN 65T 100PSI Safety Relief Valve
1385 B/M 20377735 1INCH Safety Relief Valve
1385 B/M 2385E226 1 INCH Safety Relief Valve
YB2385E226 Safety Relief Valve

Frequently Asked Questions

What is the FSCG of the NSN 4820-01-321-2221?
The FSCG of the NSN 4820-01-321-2221 is 4820
Does the NSN 4820-01-321-2221 have a Schedule B code assigned?
Yes, the Schedule B code is 8481400000
Does NSN 4820-01-321-2221 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 4820-01-321-2221 contain precious materials?
Item does not contain precious metal.
Does NSN 4820-01-321-2221 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 4820-01-321-2221 was assigned to the Federal Catalog?
It was assigned 36 years ago, on Wed, Jun 13, 1990