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Safety Relief Valve NSN 4820-00-102-9720

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 4820-00-102-9720 NSN: 4820-00-102-9720

Features and Characteristics

Thread Class
3a 1st end
Thread Direction
Right-hand 1st end
Flow Control Device
Poppet
Disk Loading Method
Spring
Connection Style
External seat for gasket seal (boss) 1st end
Valve Operation Method
Automatic
Connection Type
Threaded external boss 1st end
Thready Qty Per Inch (tpi)
12 1st end
Thread Size
1.312 inches 1st end
Opening Pressure Setting
4.0 pounds per square inch
Material
Steel comp 303 seat
Material Specification
Fed standard 66, aisi 303/sae 30303 federal standard 1st material response flow control device
Surface Treatment
Passivate
Style Designator
Straight through w/baffle
Thread Series Designator
Un 1st end
FSC
4820 Nonpowered Valves
NIIN
001029720
NSN
4820001029720

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
D559T16D4
Cage Code:
91816
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 4820-00-102-9720
What are the manufacturers of nsn 4820001029720?
Does this nsn 4820001029720 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820001029720
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 4820001029720 contain any precious metals?
No precious metal content.
Does nsn 4820001029720 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820001029720?
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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