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Fluid Pressure Regulating Valve NSN 4820-01-521-0018

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 4820-01-521-0018 NSN: 4820-01-521-0018

Features and Characteristics

Body Material
Bronze, astm b61
Body Style
Straight thru
Stem Material
Nickel copper alloy
Media For Which Designed
Water
First End Connection Type
Unthreaded internal pipe
First End Style Designator
Socket
First End Pipe Size Accommodated
0.500 inches
Seat Material
Nickel copper alloy
Face To Face Distance
9.500 inches
Flow Control Device
Disk
Flow Control Device Material
Rubber, buna-n
End Connection Quantity
2
Renewable Seat Ring Type
Retaining ring
Outlet Pressure Range
+5.0/+60.0 pounds per square inch
Regulation Type
Automatic single stage
Valve Stem Design
Single seat
Valve Loading Method
Spring
Maximum Inlet Pressure Rating
250.0 pounds per square inch
Filter
Not included
End Application
W/s nimitz
End Connection Specification/std
5371-18-031-3859
Valve Size
0.500 inches
Part Name Assigned By Controlling Agency
Pressure reducing valve
Special Features
Manufacturer identifies this valve as 1/2" style h sea water pressure reducing valve per mil-v-2042 type ii 250 lb. End connections are union end/tailpieces with 1 groove. Drawing note 7: o-rings and retaining rings provided only when specified on order.
FSC
4820 Nonpowered Valves
NIIN
015210018
NSN
4820015210018

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
MIL-V-2042
Cage Code:
81349
Status:
A
MSDS:
Part Number:
F-1370-92
Cage Code:
81346
Status:
A
MSDS:
Part Number:
40754-401
Cage Code:
55378
Status:
A
MSDS:
Part Number:
40754-4 ASSY 40754-401
Cage Code:
55378
Status:
A
MSDS:
Part Number:
40754-4
Cage Code:
55378
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 4820-01-521-0018
What are the manufacturers of nsn 4820015210018?
Does this nsn 4820015210018 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820015210018
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 4820015210018 contain any precious metals?
No precious metal content.
Does nsn 4820015210018 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820015210018?
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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  •   Certificate of Conformance
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