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Fluid Pressure Regulating Valve NSN 4820-00-181-8934

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 4820-00-181-8934 NSN: 4820-00-181-8934

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Features and Characteristics

Body Material
Any acceptableany acceptable
First End Flange Outside Diameter
5.063 inches 5.063 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
66
First End Bolt Hole Diameter
0.563 inches 0.563 inches
First End Bolt Circle Diameter
3.938 inches 3.938 inches
Second End Relationship With First End
Identicalidentical
Seat Material
Any acceptableany acceptable
Face To Face Distance
8.750 inches 8.750 inches
Packing Material
Any acceptableany acceptable
Flow Control Device
Diaphragmdiaphragm
Flow Control Device Material
Any acceptableany acceptable
End Connection Quantity
22
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 stageautomatic double stage
Valve Stem Design
Single seatsingle seat
Valve Loading Method
Spring
Maximum Inlet Pressure Rating
150.0 pounds per square inch
Outlet Pressure Accuracy Rating
Not rated
Filter
Not included
Tempurature Rating
165.0 degrees fahrenheit
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 pac 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
001818934
NSN
4820001818934

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
ASTM F 1370
Cage Code:
81346
Status:
A
MSDS:
Part Number:
ASTM F 1370-2GF1B
Cage Code:
81346
Status:
A
MSDS:
Part Number:
MILV2042
Cage Code:
81349
Status:
A
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 4820-00-181-8934
What are the manufacturers of nsn 4820001818934?
Does this nsn 4820001818934 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820001818934
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 4820001818934 contain any precious metals?
Precious metal content is unknown.
Does nsn 4820001818934 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820001818934?
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:
D
Cond. Code:
2
Status:
A

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