The Valve,butterfly, cataloged under National Stock Number 4820-01-374-4558, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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
4820-01-374-4558
Item Name
Valve,butterfly
FSC / FSG
4820 / 48 — Valves, Nonpowered
Status
ACTIVE
Style Designator
STRAIGHT THRU
Valve Size
34.000 INCHES IN
Valve Operation Method
MANUAL
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.
3120-01-513-4523POSSIBLE MATCH
BUSHING,SLEEVE
Possible match (shared part number)
4820-01-650-316526340040-1-1POSSIBLE MATCH
VALVE,BUTTERFLY
Possible match (shared part number)Tri-Tec Manufacturing Llc
4820-01-650-316726350040-1-2POSSIBLE MATCH
VALVE,BUTTERFLY
Possible match (shared part number)Tri-Tec Manufacturing Llc
4820-01-650-321426360040-1-2POSSIBLE MATCH
VALVE,BUTTERFLY
Possible match (shared part number)Tri-Tec Manufacturing Llc
4820-01-650-321626380040-1-2POSSIBLE MATCH
VALVE,BUTTERFLY
Possible match (shared part number)Tri-Tec Manufacturing Llc
4820-01-650-321826380040-1-4POSSIBLE MATCH
VALVE,BUTTERFLY
Possible match (shared part number)Tri-Tec Manufacturing Llc
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
920010-34
5/2Secondary reference
U.S. Government activity
300185 REV M
C/1Advisory reference — outside the item-of-supply concept
U.S. Government activity
2634000
C/1Advisory reference — outside the item-of-supply concept
U.S. Government activity
26340000-1-1
3/2Design control — primary reference
U.S. Government activity
2634000
5/9Secondary reference
Tri-Tec Manufacturing, Llc
Related Parts
3120-01-513-4523POSSIBLE MATCH
BUSHING,SLEEVE
4820-01-650-3165POSSIBLE MATCH
VALVE,BUTTERFLY
26340040-1-1
4820-01-650-3167POSSIBLE MATCH
VALVE,BUTTERFLY
26350040-1-2
4820-01-650-3214POSSIBLE MATCH
VALVE,BUTTERFLY
26360040-1-2
4820-01-650-3216POSSIBLE MATCH
VALVE,BUTTERFLY
26380040-1-2
4820-01-650-3218POSSIBLE MATCH
VALVE,BUTTERFLY
26380040-1-4
Frequently Asked Questions
What is NSN 4820-01-374-4558?
NSN 4820-01-374-4558 is a Valve,butterfly, classified under FSC 4820, Valves, Nonpowered. Status: active.
What NSN replaces 4820-01-374-4558?
6 possible matches (shared part number, not a government interchangeability claim): 3120-01-513-4523, 4820-01-650-3165, 4820-01-650-3167. Verify interchangeability with system specifications before substitution.
What are the specifications of 4820-01-374-4558?
Key specifications for 4820-01-374-4558: Style Designator: STRAIGHT THRU; Valve Size: 34.000 INCHES IN; Special Features: W/O ACTUATOR; Valve Operation Method: MANUAL. 3 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-374-4558 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.