The Plug,rotary,valve, cataloged under National Stock Number 4820-01-121-6112, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Catalog Facts
Item Name
Plug,rotary,valve
FSC / FSG
4820 — Valves, Nonpowered (FSG 48)
Technical Specifications
Parameter
Value
NSN
4820-01-121-6112
Item Name
Plug,rotary,valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Status
ACTIVE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
⇄Related Items3
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4820-01-304-4492POSSIBLE MATCH
VALVE,VACUUM BREAKING
Possible match (shared part number)
1730-01-394-3759190022POSSIBLE MATCH
PLUG,FILL,MODIFIED
Possible match (shared part number)Tr Engineering, Inc Div Tr Engineering Incorporated
4730-01-615-24821900-22POSSIBLE MATCH
SCHRADER VALVE
Possible match (shared part number)Msi Defense Solutions Llc
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
281958-0001 ITEM 11
5/2Secondary reference
U.S. Government activity
190022
3/2Design control — primary reference
U.S. Government activity
Related Parts
4820-01-304-4492POSSIBLE MATCH
VALVE,VACUUM BREAKING
1730-01-394-3759POSSIBLE MATCH
PLUG,FILL,MODIFIED
190022
4730-01-615-2482POSSIBLE MATCH
SCHRADER VALVE
1900-22
Frequently Asked Questions
What is NSN 4820-01-121-6112?
NSN 4820-01-121-6112 is a Plug,rotary,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
What NSN replaces 4820-01-121-6112?
3 possible matches (shared part number, not a government interchangeability claim): 4820-01-304-4492, 1730-01-394-3759, 4730-01-615-2482. Verify interchangeability with system specifications before substitution.
Is NSN 4820-01-121-6112 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.