The Valve,ball, cataloged under National Stock Number 4820-01-185-6111, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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
4820-01-185-6111
Item Name
Valve,ball
FSC / FSG
4820 / 48 — Valves, Nonpowered
Status
ACTIVE
Style Designator
CROSSCROSS
Material
COPPER ALLOY BODY
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.
4820-01-187-12932640-398X3 PIECE 44POSSIBLE MATCH
STEM,FLUID VALVE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4810-01-188-18992640-398X3 ASSEMBLY APOSSIBLE MATCH
VALVE,BALL
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4820-01-188-19832640-398X3 PIECE 8POSSIBLE MATCH
STEM,FLUID VALVE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4810-01-192-36092640-398X3 ASSEMBLY EPOSSIBLE MATCH
VALVE,BALL
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4820-01-192-71362640-398X3 ASSEMBLY CPOSSIBLE MATCH
VALVE,BALL
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4820-01-290-4928SS845-2180750ASSYA W/O RTY ACTPOSSIBLE MATCH
VALVE,BALL
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
2640-398X3 ASSE
C/1Advisory reference — outside the item-of-supply concept
U.S. Government activity
SS845-2180750
D/9Drawing number reference only
U.S. Government activity
2640-398X3
D/9Drawing number reference only
U.S. Government activity
2640-398X3 ASSEMBY D
3/2Design control — primary reference
U.S. Government activity
SS845-2180750 ASSEMBLY D
5/2Secondary reference
U.S. Government activity
Related Parts
4820-01-187-1293POSSIBLE MATCH
STEM,FLUID VALVE
2640-398X3 PIECE 44
4810-01-188-1899POSSIBLE MATCH
VALVE,BALL
2640-398X3 ASSEMBLY A
4820-01-188-1983POSSIBLE MATCH
STEM,FLUID VALVE
2640-398X3 PIECE 8
4810-01-192-3609POSSIBLE MATCH
VALVE,BALL
2640-398X3 ASSEMBLY E
4820-01-192-7136POSSIBLE MATCH
VALVE,BALL
2640-398X3 ASSEMBLY C
4820-01-290-4928POSSIBLE MATCH
VALVE,BALL
SS845-2180750ASSYA W/O RTY ACT
Frequently Asked Questions
What is NSN 4820-01-185-6111?
NSN 4820-01-185-6111 is a Valve,ball, classified under FSC 4820, Valves, Nonpowered. Status: active.
What NSN replaces 4820-01-185-6111?
6 possible matches (shared part number, not a government interchangeability claim): 4820-01-187-1293, 4810-01-188-1899, 4820-01-188-1983. Verify interchangeability with system specifications before substitution.
What are the specifications of 4820-01-185-6111?
Key specifications for 4820-01-185-6111: Style Designator: CROSSCROSS; Material: COPPER ALLOY BODY. 2 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-185-6111 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.