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4820-01-482-4849

Safety Relief Valve

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Official Item Classification

Name
Safety Relief Valve
(NSN) National Stock Number
4820-01-482-4849
(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
02/23/2001 (25 years ago)

400.0 fahrenheit single response maximum operating temp, threaded bonnet attachment method, poppet flow control device, inside spring bonnet type, spring disk loading method

Specs & Compatibility

Flow Control Device

poppet

Bonnet Type

inside spring

Bonnet Attachment Method

threaded

Disk Loading Method

spring

Maximum Operating Temp

400.0 fahrenheit single response

Minimum Operating Temp

-65.0 fahrenheit

Connection Style

plain (tube) all ends

Valve Operation Method

automatic

Connection Type

threaded external tube all ends

Features Provided

pressure tight outlet side

Maximum Operating Pressure

200.0 pounds per square inch single response

Opening Pressure Setting

22.0 pounds per square inch

Part Name Assigned By Controlling Agency

adjustable popoff relief valve

Special Features

stainless steel spring

Material

aluminum alloy 2024 body

Material

silicon seat

Style Designator

straight thru w/baffle

Furnished Items And Quantity

1 deflector cap

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
D524A-4D-22 Safety Relief Valve

Frequently Asked Questions

What is the FSCG of the NSN 4820-01-482-4849?
The FSCG of the NSN 4820-01-482-4849 is 4820
Does the NSN 4820-01-482-4849 have a Schedule B code assigned?
Yes, the Schedule B code is 8481400000
Does NSN 4820-01-482-4849 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 4820-01-482-4849 contain precious materials?
Item does not contain precious metal.
Does NSN 4820-01-482-4849 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 4820-01-482-4849 was assigned to the Federal Catalog?
It was assigned 25 years ago, on Fri, Feb 23, 2001