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Safety Relief Valve

NSN: 4820-01-365-9030 | Model: 1856M-1X1.25-90

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
4820-01-365-9030
DEMIL
NO
Thread Direction
Right-hand all ends
Flow Control Device
Disk
Bonnet Type
Inside spring
Bonnet Attachment Method
Integral
Disk Loading Method
Spring
Maximum Operating Temp
450.0 degrees fahrenheit single response
End Application
3655-00-722-3901
Connection Style
G46b plain (pipe) 1st endg9 plain, optional en (pipe) 2nd end
Valve Operation Method
Automatic
Connection Type
Threaded external pipe 1st endthreaded internal pipe 2nd end
Maximum Operating Pressure
300.0 pounds per square inch single response
Thread Size
1.000 inches 1st end1.250 inches 2nd end
Opening Pressure Setting
90.0 pounds per square inch
Material
Copper alloy
Media For Which Designed
Steam single response
Style Designator
Err-090
Thread Series Designator
Npt all ends

Parts List for Ox Generating And Charging Plant  

Other components in the assembly of NSN 3655-00-722-3901

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NSN 4820-01-365-9030 Datasheet

Supply Class (FSC):
Nonpowered Valves
Cross Reference:
  • 1856M-1X1.25-90
  • 19KFEK90
  • 1856M-1X1.25-90PSI
  • 581419-002
  • 19-402-19
Cage Codes:
  • Wright Flow Control Curtiss (CAGE 72352)
  • Conbraco Industries Inc (CAGE 72219)
  • Pacific Consolidated Industries Llc (CAGE 75906)
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:

    051080 - Faucets, bibcocks, gates valves

  • 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.

  • ACC:

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

  • LTL:

    W - Rating variable

  • TCC:

    Z - No special type of cargo code applicable

NSN Management Codes:
  • SOS
    Sms
  • AAC
    Z
  • Quantity per pack
    1
  • Unit of Measure
    Ea
  • Shelf Life
    N/A
  • Classification Control
    U
  • MGMT_CTL
    9b-----
  • Repariability

Questions & Answers:
What are the historical prices recorded for this stock number?
Historical data shows pricing from $608.27 to $1,013.78..
Does NSN 4820-01-365-9030 have a shelf life?
No. There is no shelf life applicable for this NSN.
What NATO entities are users of this NSN?
Department Of The Navy, Poland, Republic Of Korea, United Kingdom, and Italy
What is the NIIN of NSN 4820-01-365-9030?
013659030 or 01-365-9030
Does NSN 4820-01-365-9030 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 4820-01-365-9030?
No solicitations for this NSN.
When was this national stock number assigned to the federal catalog?
Oct 19, 1992