Safety Relief Valve NSN 4820-00-166-8791

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: 4820-00-166-8791

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Features and Characteristics

Pipe Size Accommodated

0.500 inches all ends

Flow Control Device

Disk

Bonnet Type

Inside spring

Bonnet Attachment Method

Threaded

Disk Loading Method

Spring

Valve Discharge Flow Rate

101.0 cubic feet per minute

Maximum Operating Temp

400.0 degrees fahrenheit single response

Connection Style

Socket all ends

Valve Operation Method

Automatic

Connection Type

Unthreaded internal pipe all ends

Features Provided

Pressure tight outlet side

Adjustable Pressure Range

+46.0/+72.0 pounds per square inch

Maximum Operating Pressure

400.0 pounds per square inch single response

Opening Pressure Setting

72.0 pounds per square inch

Material

Nickel alloy flow control device and plastic polytetrafluoroethylene flow control device

Material Specification

Qq-n-281 federal specification 1st material response stem or qq-n-288 federal specification 2nd material response stem

Media For Which Designed

Air single response

Style Designator

Angle

Test Data Document

81349-mil-s-901 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.).

Furnished Items And Quantity

2 nut and 1 lever and 2 tailpiece

Specification Data

81349-mil-v-22549 government specification

FSC

4820 Nonpowered Valves

NIIN

001668791

NSN

4820001668791

Manufacturer Part Numbers

Part numbers registered to this national stock number.

Part Number

Cage

Status

MSDS

Part Number:

MIL-V-22549

Cage Code:

81349

Status:

MSDS:

Part Number:

MIL-V-22549G1-2 400-46T072SBU

Cage Code:

03950

Status:

MSDS:

Part Number:

20274K51M

Cage Code:

01343

Status:

MSDS:

Part Number:

20274K51MC1D883116768

Cage Code:

15187

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 4820-00-166-8791

What are the manufacturers of nsn 4820001668791?

Does this nsn 4820001668791 have a shelf life?
No. This NSN does not have an applicable shelf life.

What is the formal definition of nsn 4820001668791
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 4820001668791 contain any precious metals?
Precious metal content is unknown.

Does nsn 4820001668791 contain any hazardous materials?
No MSDS. No hazardous material.

What is the ESD classification of nsn 4820001668791?
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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On Time Delivery
Certificate of Conformance
Quality Inspected Parts
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