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4820-00-015-2135

Safety Relief Valve

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Official Item Classification

Name
Safety Relief Valve
(NSN) National Stock Number
4820-00-015-2135
(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 1st end thread direction, 3a 1st end thread class, inside spring bonnet type, poppet flow control device, pressure seal, ring type bonnet attachment method

Specs & Compatibility

Thread Class

3a 1st end

Thread Direction

right-hand 1st end

Flow Control Device

poppet

Bonnet Type

inside spring

Bonnet Attachment Method

pressure seal, ring type

Disk Loading Method

spring

Valve Discharge Flow Rate

3.5 gallons per minute

Maximum Operating Temp

275.0 fahrenheit single response

Connection Style

flareless (tube) 1st end

Valve Operation Method

automatic

Connection Type

threaded external tube 1st end

Features Provided

bonnet packing and pressure tight outlet side

Thread Quantity Per Inch

18 1st end

Maximum Operating Pressure

100.0 pounds per square inch single response

Nominal Thread Size

0.562 inches 1st end

Seat Angle

12.0 degrees 1st end

Opening Pressure Setting

31.0 pounds per square inch

Nominal Outside Diameter Tube Accommodated

0.375 inches 1st end

Material

aluminum alloy 2024 and plastic polyamide (nylon) flow control device

Material

aluminum alloy 2024 body

Material

aluminum alloy 2024 seat

Media For Which Designed

hydraulic fluid, phosphate-ester base single response

Surface Treatment

anodize

Surface Treatment Document And Classification

mil-a-8625,ty 2 mil spec single treatment response

Thread Series Designator

unf 1st end

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
3H90017-101 Safety Relief Valve
8LV465 Safety Relief Valve

Frequently Asked Questions

What is the FSCG of the NSN 4820-00-015-2135?
The FSCG of the NSN 4820-00-015-2135 is 4820
Does the NSN 4820-00-015-2135 have a Schedule B code assigned?
Yes, the Schedule B code is 8481400000
Does NSN 4820-00-015-2135 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 4820-00-015-2135 contain precious materials?
Item does not contain precious metal.
Does NSN 4820-00-015-2135 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 4820-00-015-2135 was assigned to the Federal Catalog?
It was assigned 65 years ago, on Sun, Jan 1, 1961