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System Pressure Regulating Valve NSN 4820-01-489-1252

Item Description

A value designed to automatically maintain within close limits a predetermined pressure within a closed system regardless of the higher fluctuating or constant inlet pressure. The excess pressure is by-passed to the accumulator or reservoir in lieu of passing through the entire system. It is designed primarily for use in refrigeration and air conditioning systems. Excludes valve, regulating, fluid pressure and valve, calibrated flow.

NSN 4820-01-489-1252 NSN: 4820-01-489-1252

Features and Characteristics

Body Style
Straight through w/offset
Flow Control Device
Piston, spring loaded
End Connection Quantity
3
Renewable Seat Ring Type
Pressed-in
Regulation Type
Automatic single stage
Valve Loading Method
Spring
Filter
Not included
End Application
Filter separator
Part Name Assigned By Controlling Agency
Differential pressure valve
Special Features
This is a 4 inch valve. It has a light spring. Similar to p/n 740005-091which has a medium valve.
FSC
4820 Nonpowered Valves
NIIN
014891252
NSN
4820014891252

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
740000-091
Cage Code:
08712
Status:
A
MSDS:
Part Number:
720005-091
Cage Code:
08712
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 4820-01-489-1252
What are the manufacturers of nsn 4820014891252?
Does this nsn 4820014891252 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820014891252
A value designed to automatically maintain within close limits a predetermined pressure within a closed system regardless of the higher fluctuating or constant inlet pressure. the excess pressure is by-passed to the accumulator or reservoir in lieu of passing through the entire system. it is designed primarily for use in refrigeration and air conditioning systems. excludes valve, regulating, fluid pressure and valve, calibrated flow.
Does nsn 4820014891252 contain any precious metals?
Precious metal content is unknown.
Does nsn 4820014891252 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820014891252?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
35896
FIIG:
A21100
App. Key:
D
Cond. Code:
1
Status:
A

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  •   On Time Delivery
  •   Certificate of Conformance
  •   Quality Inspected Parts
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