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Safety Relief Valve

NSN: 4820-00-030-6171 | Model: D559T1M10

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
4820-00-030-6171
DEMIL
NO
Thread Direction
Right-hand 1st end
Flow Control Device
Poppet
Maximum Operating Temp
250.0 degrees fahrenheit 2nd response
Connection Style
Plain (pipe) 1st end
Valve Operation Method
Automatic
Connection Type
Threaded external pipe 1st end
Adjustable Pressure Range
+0.5/+2.4 pounds per square inch
Maximum Operating Pressure
200.0 pounds per square inch single response
Thread Size
0.125 inches 1st end
Opening Pressure Setting
10.0 pounds per square inch
Material
Stainless steel body
Media For Which Designed
Hydrogen 5th response
Style Designator
Safety relief
Thread Series Designator
Npt 1st end
Furnished Items And Quantity
1 deflector cap

Pricing and Availability

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NSN 4820-00-030-6171 Datasheet

Supply Class (FSC):
Nonpowered Valves
Cross Reference:
  • D559T1M10
  • 876961-00
Cage Codes:
  • Circor Aerospace, Inc. (CAGE 91816)
  • Defense Reduction Agency (CAGE 32345)
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.

  • 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 4820-00-030-6171 have a shelf life?
No. There is no shelf life applicable for this NSN.
What NATO entities are users of this NSN?
Defense Threat Reduction Agency
What is the NIIN of NSN 4820-00-030-6171?
000306171 or 00-030-6171
Does NSN 4820-00-030-6171 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 4820-00-030-6171?
No solicitations for this NSN.
When was this national stock number assigned to the federal catalog?
Nov 01, 1972