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NSN 4820-01-664-8636Government record, cited

Valve, Safety Relief4820-01-664-8636

NSN 4820-01-664-8636 · NIIN 016648636 · Part number B-51019-7
Mirada Research & Manufacturing, Inc. · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 08407
Government record, cited
NSN 4820-01-664-8636 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-664-8636. Manufacturer of record part number: B-51019-7.
Also searched as  4820-01-664-8636 · 4820016648636 · NIIN 016648636 · 01-664-8636 · FSC 4820 Valves, Nonpowered · CAGE 08407 · B-51019-7
Nearby stock numbers  ·
Features
  • Valve,safety Relief — FSC 4820
  • Style Designator: STRAIGHT THRU
  • Adjustable Pressure Range: +5.3 TO 5.5 POUNDS PER SQUARE INCH LBS
  • Nominal Thread Size: 1.0625 INCHES FIRST END IN
  • Surface Treatment: ANODIZE LOCATION NOT OTHERWISE SPECIFIED
  • Thread Quantity Per Inch: 12 FIRST END
  • Material: ALUMINUM BODY
  • Thread Series Designator: UN FIRST END
Identification
  • NSN: 4820-01-664-8636
  • NIIN: 016648636
  • FSC: 4820 — Valves, Nonpowered
  • FSG: 48 — Valves
  • Primary part number: B-51019-7
  • Manufacturer: Mirada Research & Manufacturing, Inc.
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-01-664-8636, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Mirada Research & Manufacturing, Inc.. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-664-8636
Primary Part NumberB-51019-7
Item NameValve,safety Relief
FSC / FSG4820 / 48 — Valves, Nonpowered
ManufacturerMirada Research & Manufacturing, Inc.
StatusACTIVE
Style DesignatorSTRAIGHT THRU
Adjustable Pressure Range+5.3 TO 5.5 POUNDS PER SQUARE INCH LBS
Nominal Thread Size1.0625 INCHES FIRST END IN
Surface TreatmentANODIZE LOCATION NOT OTHERWISE SPECIFIED
Thread Quantity Per Inch12 FIRST END
MaterialALUMINUM BODY
Thread Series DesignatorUN FIRST END
Valve Operation MethodAUTOMATIC
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
Cross-Reference Index
Part NumberManufacturer
B-51019-7 PRIMARY Mirada Research & Manufacturing, Inc. (USA)
No interchangeability data on file.
Other items in FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097
4820-00-000-0097 · Item name not on file
4820-00-001-0010
VALVE,ROTARY,SELECTOR
4820-00-001-0020
4820-00-001-0020 · Item name not on file
4820-00-001-0021
4820-00-001-0021 · Item name not on file
4820-00-001-0032
4820-00-001-0032 · Item name not on file
4820-00-001-0037
VALVE,SAFETY RELIEF
4820-00-001-0042
4820-00-001-0042 · Item name not on file
4820-00-001-1230
4820-00-001-1230 · Item name not on file

Frequently Asked Questions

What is NSN 4820-01-664-8636?

NSN 4820-01-664-8636 is a Valve,safety Relief, manufactured by Mirada Research & Manufacturing, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-664-8636?

NSN 4820-01-664-8636 has 1 manufacturer part number on file: B-51019-7 (Mirada Research & Manufacturing, Inc.).

What are the specifications of B-51019-7?

Key specifications for B-51019-7: Style Designator: STRAIGHT THRU; Adjustable Pressure Range: +5.3 TO 5.5 POUNDS PER SQUARE INCH LBS; Nominal Thread Size: 1.0625 INCHES FIRST END IN; Special Features: MINIMUM CLOSE: 5.0 PSIG;. 8 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-664-8636 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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