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Safety Relief Valve

NSN: 4820-00-051-1082 | Model: 9871

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
4820-00-051-1082
DEMIL
NO
Thread Direction
Right-hand 1st end
Flow Control Device
Disk
Connection Style
Plain (pipe) 1st end
Valve Operation Method
Automatic
Connection Type
Threaded external pipe 1st end
Features Provided
Pressure tight outlet side
Thready Qty Per Inch (tpi)
18 1st end
Thread Size
0.250 inches 1st end
Opening Pressure Setting
350.0 pounds per square inch
Material
Plastic polyamide seat
Style Designator
Straight thru
Thread Series Designator
Npt 1st end

Inventory Check

The last inventory check on this NSN was done on 09/29/2022. Due to rapid changes in inventory this may not be the current stock qty.

  • New: 85
  • New Surplus: 46
  • Serviceable: 1
  • Overhauled: 1
  • As Removed: 5

Pricing and Availability

Send us a request for quote using the form below. Our team will contact you with an up to date pricing and availability quote ASAP.

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NSN 4820-00-051-1082 Datasheet

Supply Class (FSC):
Nonpowered Valves
Cross Reference:
  • 9871
  • 8032AL
Cage Codes:
  • Engelhard Corp (CAGE 11212)
  • Henry Technologies Inc. (CAGE 28193)
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

U - Precious metal content is unknown

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.

  • LCL:

    P - 77.5

  • 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

Questions & Answers:

What are the historical prices recorded for this stock number?
No pre-dated pricing for this NSN could be found.
Does NSN 4820-00-051-1082 have a shelf life?
No. There is no shelf life applicable for this NSN.
What NATO entities are users of this NSN?
No recorded entities for this stock number.
What is the NIIN of NSN 4820-00-051-1082?
000511082 or 00-051-1082
Does NSN 4820-00-051-1082 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 4820-00-051-1082?
No solicitations for this NSN.
When was this national stock number assigned to the federal catalog?
Jan 01, 1961