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4820-01-159-3272

Safety Relief Valve

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Official Item Classification

Name
Safety Relief Valve
(NSN) National Stock Number
4820-01-159-3272
(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
08/06/1983 (43 years ago)

disk flow control device, spring disk loading method, 6 2nd end bolt hole quantity, 4 1st end bolt hole quantity, 150.0 fahrenheit single response maximum operating temp

Specs & Compatibility

Flow Control Device

disk

Disk Loading Method

spring

Bolt Hole Quantity

6 2nd end

Bolt Hole Quantity

4 1st end

Maximum Operating Temp

150.0 fahrenheit single response

Valve Operation Method

automatic

Flange Shape

round with holes 1st end

Flange Shape

round with holes 2nd end

Connection Type

flange 1st end

Connection Type

flange 2nd end

Valve Size

1.000 inches

Adjustable Pressure Range

+33.0 to 40.0 pounds per square inch

Maximum Operating Pressure

400.0 pounds per square inch single response

Nominal Outside Diameter

5.062 inches 1st end

Nominal Outside Diameter

6.500 inches 2nd end

Nominal Thickness

0.438 inches 1st end

Nominal Thickness

0.438 inches 2nd end

First Connection Face To Centerline Distance

3.469 inches

Bolt Hole Nominal Diameter

0.562 inches 1st end

Bolt Hole Nominal Diameter

0.562 inches 2nd end

Second Connection Face To Centerline Distance

3.625 inches

Bolt Circle Nominal Diameter

3.125 inches 1st end

Bolt Circle Nominal Diameter

4.438 inches 2nd end

Flange Face Design

plain 1st end

Flange Face Design

plain 2nd end

Material

nickel alloy seat

Material Document And Classification

astm a276 assn std single material response stem

Material Document And Classification

astm astm b-61 assn std single material response body

Material Document And Classification

qq-n-281 fed spec single material response seat

Media For Which Designed

liquid, ingested single response

Style Designator

angle flanged ends

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
D49272 Safety Relief Valve
R10AF1J109 Safety Relief Valve

Frequently Asked Questions

What is the FSCG of the NSN 4820-01-159-3272?
The FSCG of the NSN 4820-01-159-3272 is 4820
Does the NSN 4820-01-159-3272 have a Schedule B code assigned?
Yes, the Schedule B code is 8481400000
Does NSN 4820-01-159-3272 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 4820-01-159-3272 contain precious materials?
Item does not contain precious metal.
Does NSN 4820-01-159-3272 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 4820-01-159-3272 was assigned to the Federal Catalog?
It was assigned 43 years ago, on Sat, Aug 6, 1983