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4820-00-903-6366

Safety Relief Valve

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Official Item Classification

Name
Safety Relief Valve
(NSN) National Stock Number
4820-00-903-6366
(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
01/01/1960 (66 years ago)

right-hand 2nd end thread direction, 0.750 inches 1st end nominal pipe size accommodated, 0.500 inches 2nd end nominal pipe size accommodated, right-hand 1st end thread direction, disk flow control device

Specs & Compatibility

Nominal Pipe Size Accommodated

0.500 inches 2nd end

Nominal Pipe Size Accommodated

0.750 inches 1st end

Thread Direction

right-hand 1st end

Thread Direction

right-hand 2nd end

Flow Control Device

disk

Bonnet Type

inside spring

Bonnet Attachment Method

threaded

Disk Loading Method

spring

Maximum Operating Temp

450.0 fahrenheit single response

Connection Style

plain (pipe) 2nd end

Connection Style

plain,optional end(pipe) 1st end

Valve Operation Method

automatic or manual

Connection Type

threaded external pipe 2nd end

Connection Type

threaded internal pipe 1st end

Thread Quantity Per Inch

14 1st end

Thread Quantity Per Inch

14 2nd end

Adjustable Pressure Range

+0.0 to 1000.0 pounds per square inch

Nominal Thread Size

0.500 inches 2nd end

Nominal Thread Size

0.750 inches 1st end

Special Features

lifting lever

Material

copper alloy body

Material

copper alloy stem

Material

steel corrosion resisting flow control device

Material

steel corrosion resisting seat

Style Designator

angle

Thread Series Designator

npt 2nd end

Thread Series Designator

npt 1st end

Reference Number Differentiating Characteristics

as differentiated by valve and end connection sizes

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

Related Hardware Products

Part Number Description
23MS Safety Relief Valve

Frequently Asked Questions

What is the FSCG of the NSN 4820-00-903-6366?
The FSCG of the NSN 4820-00-903-6366 is 4820
Does the NSN 4820-00-903-6366 have a Schedule B code assigned?
Yes, the Schedule B code is 8481400000
Does NSN 4820-00-903-6366 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 4820-00-903-6366 contain precious materials?
Precious metal content is unknown
Does NSN 4820-00-903-6366 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 4820-00-903-6366 was assigned to the Federal Catalog?
It was assigned 66 years ago, on Fri, Jan 1, 1960