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904167 Safety Relief Valve

4820-00-300-7767

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Official Item Classification

Name
Safety Relief Valve
Part Number
904167
(NSN) National Stock Number
4820-00-300-7767
(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
01/01/1961 (65 years ago)

right-hand all ends thread direction, integral bonnet attachment method, inside spring bonnet type, spring disk loading method, disk flow control device

Specs & Compatibility

Thread Direction

right-hand all ends

Flow Control Device

disk

Bonnet Type

inside spring

Bonnet Attachment Method

integral

Disk Loading Method

spring

Connection Style

plain,optional end(pipe) all ends

Valve Operation Method

automatic

Connection Type

threaded internal pipe all ends

Adjustable Pressure Range

+40.0 to 140.0 pounds per square inch

Maximum Operating Pressure

400.0 pounds per square inch single response

Nominal Thread Size

0.250 inches all ends

Material

copper alloy body

Material

copper alloy seat

Material

steel flow control device

Material

steel stem

Media For Which Designed

fuel/oil, hydrocarbon single response

Style Designator

angle

Thread Series Designator

npt all ends

Regulatory Compliance

Precious Metals Indicator
U

Precious metal content is unknown

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

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Frequently Asked Questions

What is the FSCG of the NSN 4820-00-300-7767?
The FSCG of the NSN 4820-00-300-7767 is 4820
Does the NSN 4820-00-300-7767 have a Schedule B code assigned?
Yes, the Schedule B code is 8481400000
Does NSN 4820-00-300-7767 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 4820-00-300-7767 contain precious materials?
Precious metal content is unknown
Does NSN 4820-00-300-7767 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 4820-00-300-7767 was assigned to the Federal Catalog?
It was assigned 65 years ago, on Sun, Jan 1, 1961