The Indicator,valve Opening, cataloged under National Stock Number 4820-01-184-3613, 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1 specification, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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
4820-01-184-3613
Item Name
Indicator,valve Opening
FSC / FSG
4820 / 48 — Valves, Nonpowered
Status
ACTIVE
Material
NICKEL ALLOY CASE
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 Items6
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4820-01-184-3614803-4384681-A-057POSSIBLE MATCH
PLUG,VALVE
Possible match (shared part number)Naval Ship Systems Command
4820-01-228-1162803-4384681-A-79POSSIBLE MATCH
INDICATOR,VALVE OPENING
Possible match (shared part number)Naval Ship Systems Command
3040-01-228-7756803-4384681-A-78POSSIBLE MATCH
SHAFT,SHOULDERED
Possible match (shared part number)Naval Ship Systems Command
4820-01-286-4629810-4384681-07POSSIBLE MATCH
SEAT,VALVE
Possible match (shared part number)Naval Ship Systems Command
4820-01-286-7642810-4384681-08POSSIBLE MATCH
STEM,FLUID VALVE
Possible match (shared part number)Naval Ship Systems Command
3010-01-301-9152803-4384681-A-35,48,80POSSIBLE MATCH
GEAR ASSEMBLY,SPEED DECREASER
Possible match (shared part number)Naval Ship Systems Command
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
803-4384681-A-054
3/2Design control — primary reference
U.S. Government activity
803-4384681
D/9Drawing number reference only
U.S. Government activity
Related Parts
4820-01-184-3614POSSIBLE MATCH
PLUG,VALVE
803-4384681-A-057
4820-01-228-1162POSSIBLE MATCH
INDICATOR,VALVE OPENING
803-4384681-A-79
3040-01-228-7756POSSIBLE MATCH
SHAFT,SHOULDERED
803-4384681-A-78
4820-01-286-4629POSSIBLE MATCH
SEAT,VALVE
810-4384681-07
4820-01-286-7642POSSIBLE MATCH
STEM,FLUID VALVE
810-4384681-08
3010-01-301-9152POSSIBLE MATCH
GEAR ASSEMBLY,SPEED DECREASER
803-4384681-A-35,48,80
Frequently Asked Questions
What is NSN 4820-01-184-3613?
NSN 4820-01-184-3613 is a Indicator,valve Opening, classified under FSC 4820, Valves, Nonpowered. Status: active.
What NSN replaces 4820-01-184-3613?
6 possible matches (shared part number, not a government interchangeability claim): 4820-01-184-3614, 4820-01-228-1162, 3040-01-228-7756. Verify interchangeability with system specifications before substitution.
What are the specifications of 4820-01-184-3613?
Key specifications for 4820-01-184-3613: Material: NICKEL ALLOY CASE. 1 specification is documented in the U.S. Government catalog.
Is NSN 4820-01-184-3613 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.