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4820-00-142-1014

Safety Relief Valve

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Official Item Classification

Name
Safety Relief Valve
(NSN) National Stock Number
4820-00-142-1014
(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
01/01/1963 (63 years ago)

right-hand 1st end thread direction, bolted bonnet attachment method, 0.500 inches 1st end nominal pipe size accommodated, exposed spring bonnet type, disk flow control device

Specs & Compatibility

Nominal Pipe Size Accommodated

0.500 inches 1st end

Thread Direction

right-hand 1st end

Flow Control Device

disk

Bonnet Type

exposed spring

Bonnet Attachment Method

bolted

Disk Loading Method

spring

Renewable Seat Ring Type

threaded

Bolt Hole Quantity

4 2nd end

Connection Style

plain,optional end(pipe) 1st end

Valve Operation Method

automatic

Flange Shape

round with holes 2nd end

Connection Type

flange 2nd end

Connection Type

threaded internal pipe 1st end

Features Provided

bonnet packing

Adjustable Pressure Range

+31.0 to 50.0 pounds per square inch

Maximum Operating Pressure

150.0 pounds per square inch single response

Nominal Thread Size

0.500 inches 1st end

Nominal Outside Diameter

3.875 inches 2nd end

Nominal Thickness

0.438 inches 2nd end

Bolt Hole Nominal Diameter

0.500 inches 2nd end

Bolt Circle Nominal Diameter

2.750 inches 2nd end

Flange Face Design

raised straight 2nd end

Raised Face Nominal Height

0.062 inches 2nd end

Raised Face Nominal Diameter

1.688 inches 2nd end

Material

nickel alloy flow control device

Material

nickel alloy seat

Material

nickel alloy stem

Material

steel body

Media For Which Designed

water, fresh single response

Style Designator

angle

Thread Series Designator

npt 1st end

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
2250 Safety Relief Valve
A6814A Safety Relief Valve

Frequently Asked Questions

What is the FSCG of the NSN 4820-00-142-1014?
The FSCG of the NSN 4820-00-142-1014 is 4820
Does the NSN 4820-00-142-1014 have a Schedule B code assigned?
Yes, the Schedule B code is 8481400000
Does NSN 4820-00-142-1014 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 4820-00-142-1014 contain precious materials?
Precious metal content is unknown
Does NSN 4820-00-142-1014 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 4820-00-142-1014 was assigned to the Federal Catalog?
It was assigned 63 years ago, on Tue, Jan 1, 1963