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Safety Relief Valve

NSN: 4820-01-397-7839 | Model: 76913-21

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 Properties and Flags
NATO Stock Number
4820-01-397-7839
DEMIL
NO
Thread Class
3b all ends
Thread Direction
Right-hand all ends
Flow Control Device
Disk
Valve Discharge Flow Rate
20.0 gallons per minute
End Application
1730-01-272-4402
Connection Style
G4 gasket sea (boss) all ends
Valve Operation Method
Automatic
Connection Type
Threaded internal boss all ends
Thready Qty Per Inch (tpi)
12 all ends
Thread Size
1.312 inches all ends
Material
Aluminum alloy body
Media For Which Designed
Air 1st response
Style Designator
Err-090
Thread Series Designator
Un all ends

Parts List for Liquid Service Unit  

Other components in the assembly of NSN 1730-01-272-4402

Pricing and Availability

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NSN 4820-01-397-7839 Datasheet

Supply Class (FSC):
Nonpowered Valves
Cross Reference:
  • 76913-21
Cage Codes:
  • Teledyne Industries Inc (CAGE 86768)
Schedule B & Trade:
  • Schedule B: 8481400000 (NAICS 332911)

    Safety or relief valves

  • SITC: 74740

    Safety or relief valves

  • End Use: 21180

    Industrial machines, other

Identification:
HMIC

N - Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

PMIC

A - Item does not contain precious metal.

CRITL

- The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Freight Information:
  • NMFC:

    127220 - Pressure reg/red/relief valves noi

  • WCC:

    594 - Pumps and parts, (machinery and parts),(less than 35 feet)

  • SHC:

    9 - Other or no special handling required (sh)

  • ADC:

    A - Shipment is not a consolidation and does not exceed 84 inches in any dimension.

  • LTL:

    P - 77.5

  • ACC:

    V - Trailers, vehicles, machinery, shop and warehouse equipment and supplies including special tools and equipment, ground servicing

  • TCC:

    Z - No special type of cargo code applicable

NSN Management Codes:
  • SOS
    Sms
  • AAC
    J
  • Quantity per pack
    1
  • Unit of Measure
    Ea
  • Shelf Life
    N/A
  • Classification Control
    U
  • MGMT_CTL
    -------
  • Repariability

Questions & Answers:
What are the historical prices recorded for this stock number?
Historical data shows pricing from $4,002.17 to $6,670.28..
Does NSN 4820-01-397-7839 have a shelf life?
No. There is no shelf life applicable for this NSN.
What NATO entities are users of this NSN?
Defense Logistics Agency
What is the NIIN of NSN 4820-01-397-7839?
013977839 or 01-397-7839
Does NSN 4820-01-397-7839 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 4820-01-397-7839?
No solicitations for this NSN.
When was this national stock number assigned to the federal catalog?
Oct 20, 1994