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Safety Relief Valve NSN 4820-01-504-4387

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 4820-01-504-4387 NSN: 4820-01-504-4387

Features and Characteristics

Flow Control Device
Disk
Bonnet Type
Inside spring
Bonnet Attachment Method
Union
Disk Loading Method
Spring
Bolt Hole Quantity
6 all ends
Maximum Operating Temp
150.0 degrees fahrenheit single response
Valve Operation Method
Automatic or manual
Flange Shape
Round with holes all ends
Connection Type
Flange all ends
Mounting Facility
Clamp
Valve Size
2.0000 inches
Maximum Operating Pressure
150.0 pounds per square inch single response
Outside Diameter
5.5625 inches all ends
Thickness
0.4375 inches all ends
First Connection Face To Centerline Distance
4.000 inches
Bolt Hole Diameter
0.5625 inches all ends
Second Connection Face To Centerline Distance
4.000 inches
Bolt Circle Diameter
4.4375 inches all ends
Flange Face Design
Plain all ends
Part Name Assigned By Controlling Agency
2" x 2" dl/b-1 & dl/b-2 series relief valve
Material
Stainless steel stem
Style Designator
Err-090
Furnished Items And Quantity
1 handle
Specification Data
81349-mil-f-20042 cl. 150 government specification
FSC
4820 Nonpowered Valves
NIIN
015044387
NSN
4820015044387

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
NMP1144/CDS716/
Cage Code:
15187
Status:
A
MSDS:
Part Number:
NMP-1144/CDS716/MILF20042/CL 150
Cage Code:
15187
Status:
A
MSDS:
Part Number:
NMP-1144
Cage Code:
15187
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 4820-01-504-4387
What are the manufacturers of nsn 4820015044387?
Does this nsn 4820015044387 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820015044387
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 4820015044387 contain any precious metals?
No precious metal content.
Does nsn 4820015044387 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820015044387?
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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