PartsTable TECHNICAL DATA SHEET
NSN 4820-01-424-5425Government record, cited

Stem, Fluid Valve4820-01-424-5425

NSN 4820-01-424-5425 · NIIN 014245425 · Part number MK80-184980B-9Y
Richards Industries Valve Group Jordan Valve Div · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 21476
Government record, cited
NSN 4820-01-424-5425 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-424-5425. Manufacturer of record part number: MK80-184980B-9Y.
Also searched as  4820-01-424-5425 · 4820014245425 · NIIN 014245425 · 01-424-5425 · FSC 4820 Valves, Nonpowered · CAGE 21476 · MK80-184980B-9Y
Nearby stock numbers  ·
Features
  • Stem,fluid Valve — FSC 4820
  • Valve Type for Which Designed: REGULATOR
  • Valve Model Number for Which Designed: MARK 80
  • Valve Size for Which Designed: 0.500 INCHES IN
  • 2 manufacturer part numbers on file
  • Manufacturer of record: Richards Industries Valve Group Jordan Valve Div
Identification
  • NSN: 4820-01-424-5425
  • NIIN: 014245425
  • FSC: 4820 — Valves, Nonpowered
  • FSG: 48 — Valves
  • Primary part number: MK80-184980B-9Y
  • Manufacturer: Richards Industries Valve Group Jordan Valve Div
General Description

The Stem,fluid Valve, cataloged under National Stock Number 4820-01-424-5425, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Richards Industries Valve Group Jordan Valve Div. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-424-5425
Primary Part NumberMK80-184980B-9Y
Item NameStem,fluid Valve
FSC / FSG4820 / 48 — Valves, Nonpowered
ManufacturerRichards Industries Valve Group Jordan Valve Div
StatusACTIVE
Valve Type for Which DesignedREGULATOR
Valve Model Number for Which DesignedMARK 80
Valve Size for Which Designed0.500 INCHES IN
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
MK80-184980B-9Y PRIMARY Richards Industries Valve Group Jordan Valve Div (USA)
MK80-184980B-9Y W. & O. Supply, Inc. Div W&o Norfolk (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 4820-01-424-5425?

NSN 4820-01-424-5425 is a Stem,fluid Valve, manufactured by Richards Industries Valve Group Jordan Valve Div, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-424-5425?

NSN 4820-01-424-5425 has 2 manufacturer part numbers on file: MK80-184980B-9Y (Richards Industries Valve Group Jordan Valve Div), MK80-184980B-9Y (W. & O. Supply, Inc. Div W&o Norfolk).

What are the specifications of MK80-184980B-9Y?

Key specifications for MK80-184980B-9Y: Valve Type for Which Designed: REGULATOR; Valve Model Number for Which Designed: MARK 80; Valve Size for Which Designed: 0.500 INCHES IN; End Item Identification: STRATEGIC SEALIFT CONVERSION SHIPS CLASS. 3 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-424-5425 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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