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4820-01-004-2005

Safety Relief Valve

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Official Item Classification

Name
Safety Relief Valve
(NSN) National Stock Number
4820-01-004-2005
(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
05/29/1975 (51 years ago)

2b all ends thread class, ball flow control device, spring disk loading method, inverted flare(tube) all ends connection style, right-hand all ends thread direction

Specs & Compatibility

Thread Class

2b all ends

Thread Direction

right-hand all ends

Flow Control Device

ball

Disk Loading Method

spring

Connection Style

inverted flare(tube) all ends

Valve Operation Method

automatic

Connection Type

threaded internal tube all ends

Adjustable Pressure Range

+28.0 to 35.0 pounds per square inch

Nominal Thread Size

0.375 inches all ends

Seat Angle

37.0 degrees all ends

Opening Pressure Setting

28.0 pounds per square inch

Nominal Outside Diameter Tube Accommodated

0.188 inches all ends

Material

steel body

Material

steel corrosion resisting flow control device

Material

steel corrosion resisting seat

Style Designator

angle

Thread Series Designator

unc all ends

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
115632044 Safety Relief Valve
115652001PC22 Safety Relief Valve
4820PL0736664 Safety Relief Valve

Frequently Asked Questions

What is the FSCG of the NSN 4820-01-004-2005?
The FSCG of the NSN 4820-01-004-2005 is 4820
Does the NSN 4820-01-004-2005 have a Schedule B code assigned?
Yes, the Schedule B code is 8481400000
Does NSN 4820-01-004-2005 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 4820-01-004-2005 contain precious materials?
Precious metal content is unknown
Does NSN 4820-01-004-2005 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 4820-01-004-2005 was assigned to the Federal Catalog?
It was assigned 51 years ago, on Thu, May 29, 1975