The Disk,valve, cataloged under National Stock Number 4820-01-425-3725, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4820-01-425-3725
Item Name
Disk,valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Status
ACTIVE
Material
STEEL CORROSION RESISTING
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items5
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4820-01-425-3727POSSIBLE MATCH
GEAR OPERATOR,VALVE
Possible match (shared part number)
4820-01-425-422710IN M3011-222A-1JPOSSIBLE MATCH
VALVE,BUTTERFLY
Possible match (shared part number)Dover Resources, Inc. Div Norriseal
4820-01-425-809252715A029POSSIBLE MATCH
COVER,VALVE TOPWORKS
Possible match (shared part number)Dover Resources, Inc. Div Norriseal
1730-01-667-510298001-2POSSIBLE MATCH
MOORING EYE,AIRCRAFT
Possible match (shared part number)Align Precision-Anaheim, Llc
3940-01-671-7117803-1916300N TYPE 18POSSIBLE MATCH
TIE DOWN,PLATE
Possible match (shared part number)Naval Sea Systems Command
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
980-012 IT2
5/2Secondary reference
U.S. Government activity
51310K181
3/2Design control — primary reference
U.S. Government activity
51310K181
5/9Secondary reference
Cooper Cameron Corp Cooper Cameron Valves Div
980-012
D/9Drawing number reference only
U.S. Government activity
Related Parts
4820-01-425-3727POSSIBLE MATCH
GEAR OPERATOR,VALVE
4820-01-425-4227POSSIBLE MATCH
VALVE,BUTTERFLY
10IN M3011-222A-1J
4820-01-425-8092POSSIBLE MATCH
COVER,VALVE TOPWORKS
52715A029
1730-01-667-5102POSSIBLE MATCH
MOORING EYE,AIRCRAFT
98001-2
3940-01-671-7117POSSIBLE MATCH
TIE DOWN,PLATE
803-1916300N TYPE 18
Frequently Asked Questions
What is NSN 4820-01-425-3725?
NSN 4820-01-425-3725 is a Disk,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
What NSN replaces 4820-01-425-3725?
5 possible matches (shared part number, not a government interchangeability claim): 4820-01-425-3727, 4820-01-425-4227, 4820-01-425-8092. Verify interchangeability with system specifications before substitution.
What are the specifications of 4820-01-425-3725?
Key specifications for 4820-01-425-3725: Special Features: VALVE SIZE 10IN IN; End Item Identification: NORRIS VALVE MODEL M3011-222A-1J; STRATEGIC SEALIFT CONVERSION SHIPS CLASS A; Material: STEEL CORROSION RESISTING. 1 specification is documented in the U.S. Government catalog.
Is NSN 4820-01-425-3725 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.