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Safety Relief Valve NSN 4820-01-170-9778

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 4820-01-170-9778 NSN: 4820-01-170-9778

Features and Characteristics

Flow Control Device
Disk
Bonnet Type
Inside screw
Bonnet Attachment Method
Threaded
Maximum Operating Temp
180.0 degrees fahrenheit single response
Valve Operation Method
Automatic
Flange Shape
Round 2nd end
Connection Type
Flange 1st end
Valve Size
2.000 inches
Adjustable Pressure Range
+90.0/+140.0 pounds per square inch
Maximum Operating Pressure
300.0 pounds per square inch single response
Outside Diameter
8.250 inches 1st end
Thickness
0.906 inches 1st end
First Connection Face To Centerline Distance
4.500 inches
Second Connection Face To Centerline Distance
4.125 inches
Flange Face Design
Plain 2nd end
Material
Rubber butadiene-acrylonitrile class nbr flow control device
Material Specification
Qq-n-281 federal specification single material response stem
Media For Which Designed
Water, salt single response
Style Designator
Err-090
FSC
4820 Nonpowered Valves
NIIN
011709778
NSN
4820011709778

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
1385-2X3IN90T140PSI
Cage Code:
35705
Status:
A
MSDS:
Part Number:
C3457
Cage Code:
35795
Status:
A
MSDS:
Part Number:
1384-2X3IN90T140PSI
Cage Code:
35795
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 4820-01-170-9778
What are the manufacturers of nsn 4820011709778?
Does this nsn 4820011709778 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820011709778
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 4820011709778 contain any precious metals?
No precious metal content.
Does nsn 4820011709778 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820011709778?
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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  •   On Time Delivery
  •   Certificate of Conformance
  •   Quality Inspected Parts
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