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Safety Relief Valve NSN 4820-01-209-0276

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 4820-01-209-0276 NSN: 4820-01-209-0276

Features and Characteristics

Flow Control Device
Disk
Bonnet Type
Inside spring
Bonnet Attachment Method
Union
Disk Loading Method
Spring
Bolt Hole Quantity
4 all ends
Valve Operation Method
Automatic
Flange Shape
Round with holes all ends
Connection Type
Flange all ends
Valve Size
1.250 inches
Adjustable Pressure Range
+101.0 to 140.0 pounds per square inch
Maximum Operating Pressure
140.0 pounds per square inch single response
Outside Diameter
4.500 inches all ends
Thickness
0.438 inches all ends
First Connection Face To Centerline Distance
3.750 inches
Bolt Hole Diameter
0.562 inches all ends
Second Connection Face To Centerline Distance
3.000 inches
Bolt Circle Diameter
3.375 inches all ends
Flange Face Design
Plain all ends
Material
Nickel alloy seat
Material Specification
Qq-n-281 federal specification single material response seat
Media For Which Designed
Water-oil-gas single response
Style Designator
C1a angle flanged ends
FSC
4820 Nonpowered Valves
NIIN
012090276
NSN
4820012090276

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
LL2124-C 101 T0
Cage Code:
75954
Status:
A
MSDS:
Part Number:
LL2124-C 101 T14
Cage Code:
15187
Status:
A
MSDS:
Part Number:
NMP-233-101 T140
Cage Code:
15187
Status:
A
MSDS:
Part Number:
NMP-233
Cage Code:
75954
Status:
A
MSDS:
Part Number:
LL2124-C 101 T140 PSI
Cage Code:
75954
Status:
A
MSDS:
Part Number:
NMP-233-101 T140 PSI
Cage Code:
75954
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 4820-01-209-0276
What are the manufacturers of nsn 4820012090276?
Does this nsn 4820012090276 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820012090276
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 4820012090276 contain any precious metals?
No precious metal content.
Does nsn 4820012090276 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820012090276?
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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