Safety Relief Valve NSN 4820-00-289-1789

Item Description

A valve designed to automatically release excessive pressures. It is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It may be inline or cartridge (manifold) design. Excludes valve (1), relief, pressure and temperature.

NSN: 4820-00-289-1789

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Features and Characteristics

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

Maximum Operating Temp

400.0 degrees fahrenheit single response

Connection Style

Plain, optional en (pipe) 1st end

Valve Operation Method

Automatic or manual

Flange Shape

Round with holes 2nd end

Connection Type

Threaded internal pipe 1st end

Features Provided

Valve stem lock shield

Thready Qty Per Inch (tpi)

14 1st end

Adjustable Pressure Range

+91.0/+144.0 pounds per square inch

Maximum Operating Pressure

300.0 pounds per square inch single response

Thread Size

0.500 inches 1st end

Outside Diameter

3.750 inches 2nd end

Thickness

0.562 inches 2nd end

First Connection Face To Centerline Distance

3.750 inches

Bolt Hole Diameter

0.562 inches 2nd end

Second Connection Face To Centerline Distance

1.812 inches

Bolt Circle Diameter

2.625 inches 2nd end

Flange Face Design

Raised straight 2nd end

Raised Face Height

0.250 inches 2nd end

Raised Face Diameter

2.000 inches 2nd end

Material

Steel uns j03008 body

Material Specification

Mil-s-15083 military specification single material response body

Media For Which Designed

Steam single response

Style Designator

Angle flanged ends

Thread Series Designator

Npt 1st end

Furnished Items And Quantity

1 sight gage

Nondefinitive Specification/std Data

1 type and d composition

FSC

4820 Nonpowered Valves

NIIN

002891789

NSN

4820002891789

Manufacturer Part Numbers

Part numbers registered to this national stock number.

Part Number

Cage

Status

MSDS

Part Number:

MILV20065

Cage Code:

81349

Status:

MSDS:

Part Number:

TYPE1512

Cage Code:

16497

Status:

MSDS:

Part Number:

R6215AM

Cage Code:

16497

Status:

MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov

Schedule B Number: 8481400000
NAICS: 332911
SITC: 74740
Description: Safety or relief valves
End Use (Code 21180):
Industrial machines, other

Q & A

Frequently asked questions for NSN 4820-00-289-1789

What are the manufacturers of nsn 4820002891789?

Military Specifications (81349)
Dresser, Inc. (16497)

Does this nsn 4820002891789 have a shelf life?
No. This NSN does not have an applicable shelf life.

What is the formal definition of nsn 4820002891789
A valve designed to automatically release excessive pressures. it is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. it is not designed for regulation of continuously fluctuating loads. it may be inline or cartridge (manifold) design. excludes valve (1), relief, pressure and temperature.

Does nsn 4820002891789 contain any precious metals?
No precious metal content.

Does nsn 4820002891789 contain any hazardous materials?
No MSDS. No hazardous material.

What is the ESD classification of nsn 4820002891789?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)

INC

FIIG

App. Key

Cond. Code

Status

INC:

05488

FIIG:

A046B0

App. Key:

Cond. Code:

Status:

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