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Safety Relief Valve NSN 4820-01-139-1897

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 4820-01-139-1897 NSN: 4820-01-139-1897

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Features and Characteristics

Flow Control Device
Disk
Bonnet Type
Inside spring
Bonnet Attachment Method
Bolted
Maximum Operating Temp
150.0 degrees fahrenheit single response
Connection Style
Streamlined with one brazing ring (tube) err-100
Valve Operation Method
Automatic
Flange Shape
Round 2nd end
Connection Type
Unthreaded internal tube 1st end
Adjustable Pressure Range
+211.0/+240.0 pounds per square inch
Maximum Operating Pressure
250.0 pounds per square inch single response
Outside Diameter
3.812 inches 2nd end
Thickness
0.688 inches 2nd end
Flange Face Design
Plain 2nd end
Outside Diameter Tube Accommodated
0.750 inches 1st end
Material
Plastic polychlorotrifluoroethylene seat
Style Designator
Err-090
FSC
4820 Nonpowered Valves
NIIN
011391897
NSN
4820011391897

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
20346
Cage Code:
15187
Status:
A
MSDS:
Part Number:
20346T51M
Cage Code:
15187
Status:
A
MSDS:
Part Number:
BEMAA08SDD
Cage Code:
5P967
Status:
A
MSDS:
Part Number:
20346 PART20346T51M
Cage Code:
15187
Status:
A
MSDS:
Part Number:
D54FU 211T240 3/4 IN.
Cage Code:
65079
Status:
A
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 4820-01-139-1897
What are the manufacturers of nsn 4820011391897?
Does this nsn 4820011391897 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820011391897
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 4820011391897 contain any precious metals?
No precious metal content.
Does nsn 4820011391897 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820011391897?
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:
AP
Cond. Code:
1
Status:
A

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