Fluid Pressure Regulating Valve NSN 4820-00-181-8958

Item Description

A valve designed to automatically maintain within close limits a predetermined outlet pressure which may be adjustable within a specified range regardless of the higher fluctuating or constant inlet pressure. It is designed for use with compressed gas(es) and various liquids and may include gauges. It may be inline or cartridge (manifold) design. Excludes regulator, pressure, medical gas administration apparatus; regulator, oxygen, barometric continuous flow; regulator, oxygen demand; regulator, oxygen diluter demand; and valve(1), fluid pressure regulating, aircraft.

NSN: 4820-00-181-8958

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Features and Characteristics

Body Material

Any acceptableany acceptable

First End Flange Outside Diameter

4.500 inches 4.500 inches

Body Style

Straight thrustraight thru

Stem Material

Any acceptableany acceptable

Media For Which Designed

Water, fresh and water, fresh and water, saltwater, salt

First End Connection Type

Plain face flangeplain face flange

First End Style Designator

Plainplain

First End Flange Shape Style

Round w/ bolt holesround w/ bolt holes

First End Flange Thickness

0.438 inches 0.438 inches

First End Bolt Hole Quantity

First End Bolt Hole Diameter

0.563 inches 0.563 inches

First End Bolt Circle Diameter

3.375 inches 3.375 inches

Second End Relationship With First End

Identicalidentical

Seat Material

Any acceptableany acceptable

Face To Face Distance

7.938 inches 7.938 inches

Packing Material

Any acceptableany acceptable

Flow Control Device

Diaphragmdiaphragm

Flow Control Device Material

Any acceptableany acceptable

End Connection Quantity

Renewable Seat Ring Type

Threadedthreaded

Outlet Pressure Range

+25.0 to 60.0 pounds per square inch+25.0 to 60.0 pounds per square inch

Regulation Type

Automatic double stage

Valve Stem Design

Single seat

Valve Loading Method

Spring

Maximum Inlet Pressure Rating

150.0 pounds per square inch

Outlet Pressure Accuracy Rating

Not rated

Filter

Not included

Special Test Features

High-impact shock tests are required as directed in paragraphs 3.6 and 4.4.2.3 of mil-v-2042 in pack test above

Test Data Document

81349-milv2042 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.).

Nondefinitive Specification/std Data

2 type

FSC

4820 Nonpowered Valves

NIIN

001818958

NSN

4820001818958

Manufacturer Part Numbers

Part numbers registered to this national stock number.

Part Number

Cage

Status

MSDS

Part Number:

F1370

Cage Code:

81346

Status:

MSDS:

Part Number:

F13702FF1B

Cage Code:

81346

Status:

MSDS:

Part Number:

4207-D27994

Cage Code:

33547

Status:

MSDS:

Part Number:

MILV2042

Cage Code:

81349

Status:

MSDS:

Part Number:

F137002HF1B

Cage Code:

81346

Status:

MSDS:

Foreign Trade & Schedule B

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

Schedule B Number: 8481809015
NAICS: 332911
SITC: 74780
Description: Regulator valves, self-operating, for controlling variables such as temperature, pressure, flow and liquid level
End Use (Code 21180):
Industrial machines, other

Q & A

Frequently asked questions for NSN 4820-00-181-8958

What are the manufacturers of nsn 4820001818958?

American Society For Testing And (81346)
Kieley And Mueller Inc (33547)
Military Specifications (81349)

Does this nsn 4820001818958 have a shelf life?
No. This NSN does not have an applicable shelf life.

What is the formal definition of nsn 4820001818958
A valve designed to automatically maintain within close limits a predetermined outlet pressure which may be adjustable within a specified range regardless of the higher fluctuating or constant inlet pressure. it is designed for use with compressed gas(es) and various liquids and may include gauges. it may be inline or cartridge (manifold) design. excludes regulator, pressure, medical gas administration apparatus; regulator, oxygen, barometric continuous flow; regulator, oxygen demand; regulator, oxygen diluter demand; and valve(1), fluid pressure regulating, aircraft.

Does nsn 4820001818958 contain any precious metals?
Precious metal content is unknown.

Does nsn 4820001818958 contain any hazardous materials?
No MSDS. No hazardous material.

What is the ESD classification of nsn 4820001818958?
No known electrostatic discharge.

Identification Group

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

INC

FIIG

App. Key

Cond. Code

Status

INC:

27565

FIIG:

A21100

App. Key:

Cond. Code:

Status:

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