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4820-01-169-2737

Safety Relief Valve

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Official Item Classification

Name
Safety Relief Valve
(NSN) National Stock Number
4820-01-169-2737
(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
01/05/1984 (42 years ago)

525.0 gallons per minute valve discharge flow rate, flange 1st end connection type, automatic valve operation method, disk flow control device, spring disk loading method

Specs & Compatibility

Flow Control Device

disk

Disk Loading Method

spring

Valve Discharge Flow Rate

525.0 gallons per minute

Valve Operation Method

automatic

Connection Type

flange 1st end

Flange Face Design

plain 1st end

Material

aluminum alloy 356.0 body

Material

steel comp 303 flow control device

Material Document And Classification

qq-a-601 fed spec single material response body

Material Document And Classification

qq-s-764 fed spec single material response flow control device

Surface Treatment

anodize

Surface Treatment Document And Classification

mil-a-8625 mil spec single treatment response

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
56C106 Safety Relief Valve

Frequently Asked Questions

What is the FSCG of the NSN 4820-01-169-2737?
The FSCG of the NSN 4820-01-169-2737 is 4820
Does the NSN 4820-01-169-2737 have a Schedule B code assigned?
Yes, the Schedule B code is 8481400000
Does NSN 4820-01-169-2737 require demilitarization?
Usml items - mutilation to the point of scrap required worldwide. (note 7).
Does NSN 4820-01-169-2737 contain precious materials?
Item does not contain precious metal.
Does NSN 4820-01-169-2737 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 4820-01-169-2737 was assigned to the Federal Catalog?
It was assigned 42 years ago, on Thu, Jan 5, 1984