NSN 4820-01-063-4840 · NIIN 010634840 · Part number SS845-1889567ASSYD1IN
William Powell Company, the Dba Powell Valve Div the Starflo Corporation · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 48422
Government record, cited
NSN 4820-01-063-4840 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-063-4840. Manufacturer of record part number: SS845-1889567ASSYD1IN.
Manufacturer of record: William Powell Company, the Dba Powell Valve Div the Starflo Corporation
Identification
NSN: 4820-01-063-4840
NIIN: 010634840
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: SS845-1889567ASSYD1IN
Manufacturer: William Powell Company, the Dba Powell Valve Div the Starflo Corporation
General Description
The Valve,angle, cataloged under National Stock Number 4820-01-063-4840, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is William Powell Company, the Dba Powell Valve Div the Starflo Corporation. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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.
Catalog Facts
Item Name
Valve,angle
FSC / FSG
4820 — Valves, Nonpowered (FSG 48)
Manufacturers
William Powell Company, the Dba Powell Valve Div the Starflo Corporation (CAGE 48422)
Technical Specifications
Parameter
Value
NSN
4820-01-063-4840
Primary Part Number
SS845-1889567ASSYD1IN
Item Name
Valve,angle
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
William Powell Company, the Dba Powell Valve Div the Starflo Corporation
Status
ACTIVE
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.
4820-01-115-6756E-26631 REV D T-316POSSIBLE MATCH
STEM,FLUID VALVE
Possible match (shared part number)William Powell Company, the Dba Powell Valve Div the Starflo Corporation
4820-01-118-80562620-925X2PIECE4 1-2INPOSSIBLE MATCH
STEM,FLUID VALVE
Possible match (shared part number)William Powell Company, the Dba Powell Valve Div the Starflo Corporation
4820-01-132-91832620-925X2PIECE18 3-4INPOSSIBLE MATCH
DISK,VALVE
Possible match (shared part number)William Powell Company, the Dba Powell Valve Div the Starflo Corporation
4820-01-133-02462620-925X2PIECE4 3-4INPOSSIBLE MATCH
STEM,FLUID VALVE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4820-01-237-6471E33419POSSIBLE MATCH
DISK,VALVE
Possible match (shared part number)William Powell Company, the Dba Powell Valve Div the Starflo Corporation
4820-01-541-4658803-2177525-S3A1AFPOSSIBLE MATCH
VALVE,GLOBE
Possible match (shared part number)Naval Ship Systems Command
William Powell Company, the Dba Powell Valve Div the Starflo Corporation (USA)
Reference documents
Reference
Meaning
803-21-77525-S525
3/2Design control — primary reference
U.S. Government activity
2620-925X2ASSYD1IN
5/9Secondary reference
U.S. Government activity
803-2177525
D/9Drawing number reference only
U.S. Government activity
SS845-1889567
D/9Drawing number reference only
Naval Sea Systems Command
Related Parts
4820-01-115-6756POSSIBLE MATCH
STEM,FLUID VALVE
E-26631 REV D T-316
4820-01-118-8056POSSIBLE MATCH
STEM,FLUID VALVE
2620-925X2PIECE4 1-2IN
4820-01-132-9183POSSIBLE MATCH
DISK,VALVE
2620-925X2PIECE18 3-4IN
4820-01-133-0246POSSIBLE MATCH
STEM,FLUID VALVE
2620-925X2PIECE4 3-4IN
4820-01-237-6471POSSIBLE MATCH
DISK,VALVE
E33419
4820-01-541-4658POSSIBLE MATCH
VALVE,GLOBE
803-2177525-S3A1AF
Frequently Asked Questions
What is NSN 4820-01-063-4840?
NSN 4820-01-063-4840 is a Valve,angle, manufactured by William Powell Company, the Dba Powell Valve Div the Starflo Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-063-4840?
NSN 4820-01-063-4840 has 3 manufacturer part numbers on file: SS845-1889567ASSYD1IN (William Powell Company, the Dba Powell Valve Div the Starflo Corporation), 2479-1IN (William Powell Company, the Dba Powell Valve Div the Starflo Corporation), 2620-925X2ASSYD1IN (William Powell Company, the Dba Powell Valve Div the Starflo Corporation).
What NSN replaces 4820-01-063-4840?
6 possible matches (shared part number, not a government interchangeability claim): 4820-01-115-6756, 4820-01-118-8056, 4820-01-132-9183. Verify interchangeability with system specifications before substitution.
Is NSN 4820-01-063-4840 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.