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Safety Relief Valve NSN 4820-01-189-7581

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 4820-01-189-7581 NSN: 4820-01-189-7581

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Features and Characteristics

Flow Control Device
Disk
Bonnet Type
Inside screw
Bonnet Attachment Method
Bolted
Disk Loading Method
Spring
Bolt Hole Quantity
8 all ends
Valve Operation Method
Automatic
Flange Shape
Round with holes 2nd end
Connection Type
Flange all ends
Valve Size
4.000 inches
Adjustable Pressure Range
+72.0/+88.0 pounds per square inch
Maximum Operating Pressure
3300.0 pounds per square inch single response
Outside Diameter
9.000 inches 2nd end
Thickness
1.250 inches 2nd end
First Connection Face To Centerline Distance
8.438 inches
Bolt Hole Diameter
0.875 inches 1st end
Second Connection Face To Centerline Distance
8.500 inches
Bolt Circle Diameter
9.500 inches 1st end
Flange Face Design
Raised straight 2nd end
Raised Face Height
0.062 inches 2nd end
Raised Face Diameter
6.188 inches 2nd end
Special Features
Spring material corrosion resistant steel astm a313 (std)
Material
Stainless steel stem
Media For Which Designed
Liquid, ingested single response
Style Designator
Err-090
Furnished Items And Quantity
1 lever
FSC
4820 Nonpowered Valves
NIIN
011897581
NSN
4820011897581

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
R10AN5P513-CS1
Cage Code:
34889
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 4820-01-189-7581
What are the manufacturers of nsn 4820011897581?
Does this nsn 4820011897581 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820011897581
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 4820011897581 contain any precious metals?
No precious metal content.
Does nsn 4820011897581 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820011897581?
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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