NSN 4820-01-443-5041 · NIIN 014435041 · Part number 1861 SWE 1/4 PART 9
William Powell Company, the Dba Powell Valve Div the Starflo Corporation · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 48422
Government record, cited
NSN 4820-01-443-5041 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-443-5041. Manufacturer of record part number: 1861 SWE 1/4 PART 9.
Also searched as4820-01-443-5041 ·
4820014435041 ·
NIIN 014435041 ·
01-443-5041 ·
FSC 4820 Valves, Nonpowered · CAGE 48422 · 1861 SWE 1/4 PART 9 · 63502-B 1861 SWE 1/4 PART 9 · 63502-B
Material Document and Classification: ASTM A296, GRADE CF8M ASSN STD SINGLE MATERIAL RESPONSE
Valve Size for Which Designed: 0.250 INCHES IN
Material: STEEL CORROSION RESISTING
Attachment Method: RETAINING RING
1 manufacturer part number on file
Identification
NSN: 4820-01-443-5041
NIIN: 014435041
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 1861 SWE 1/4 PART 9
Manufacturer: William Powell Company, the Dba Powell Valve Div the Starflo Corporation
General Description
The Cap,valve, cataloged under National Stock Number 4820-01-443-5041, 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. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government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
4820-01-443-5041
Primary Part Number
1861 SWE 1/4 PART 9
Item Name
Cap,valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
William Powell Company, the Dba Powell Valve Div the Starflo Corporation
Status
ACTIVE
Valve Type for Which Designed
GLOBE
Valve Model Number for Which Designed
1861 SWE
Material Document and Classification
ASTM A296, GRADE CF8M ASSN STD SINGLE MATERIAL RESPONSE
Valve Size for Which Designed
0.250 INCHES IN
Material
STEEL CORROSION RESISTING
Attachment Method
RETAINING RING
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 Items7
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4820-01-443-50421861 SWE 1/4 PART 4POSSIBLE MATCH
STEM,FLUID VALVE
Possible match (shared part number)William Powell Company, the Dba Powell Valve Div the Starflo Corporation
4820-01-443-50451861 SWE 1/4 PART 13POSSIBLE MATCH
DISK,VALVE
Possible match (shared part number)William Powell Company, the Dba Powell Valve Div the Starflo Corporation
4820-01-443-50571861 SWE 1/4INCHPOSSIBLE MATCH
VALVE,GLOBE
Possible match (shared part number)William Powell Company, the Dba Powell Valve Div the Starflo Corporation
4820-01-447-777063502-B 1861 SWE 1/2 PART 9POSSIBLE MATCH
CAP,VALVE
Possible match (shared part number)William Powell Company, the Dba Powell Valve Div the Starflo Corporation
4820-01-447-778263502-B 1861 SWE 1/2 PART 4POSSIBLE MATCH
STEM,FLUID VALVE
Possible match (shared part number)William Powell Company, the Dba Powell Valve Div the Starflo Corporation
4820-01-447-798463502-B 1861 SWE 1/2 PART 13POSSIBLE MATCH
DISK,VALVE
Possible match (shared part number)William Powell Company, the Dba Powell Valve Div the Starflo Corporation
4730-01-448-884863502-B 1861 SWE 1/2 PART 10POSSIBLE MATCH
LOCKNUT,PIPE
Possible match (shared part number)William Powell Company, the Dba Powell Valve Div the Starflo Corporation
William Powell Company, the Dba Powell Valve Div the Starflo Corporation (USA)
Reference documents
Reference
Meaning
63502-B 1861 SWE 1/4 PART 9
5/9Secondary reference
William Powell Company, the Dba Powell Valve Div the Starflo Corporation
63502-B
D/9Drawing number reference only
William Powell Company, the Dba Powell Valve Div the Starflo Corporation
1861 SWE 1/4 PART 9
5/9Secondary reference
Mutual Mfg and Supply Co
Related Parts
4820-01-443-5042POSSIBLE MATCH
STEM,FLUID VALVE
1861 SWE 1/4 PART 4
4820-01-443-5045POSSIBLE MATCH
DISK,VALVE
1861 SWE 1/4 PART 13
4820-01-443-5057POSSIBLE MATCH
VALVE,GLOBE
1861 SWE 1/4INCH
4820-01-447-7770POSSIBLE MATCH
CAP,VALVE
63502-B 1861 SWE 1/2 PART 9
4820-01-447-7782POSSIBLE MATCH
STEM,FLUID VALVE
63502-B 1861 SWE 1/2 PART 4
4820-01-447-7984POSSIBLE MATCH
DISK,VALVE
63502-B 1861 SWE 1/2 PART 13
4730-01-448-8848POSSIBLE MATCH
LOCKNUT,PIPE
63502-B 1861 SWE 1/2 PART 10
Frequently Asked Questions
What is NSN 4820-01-443-5041?
NSN 4820-01-443-5041 is a Cap,valve, 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 4820-01-443-5041?
NSN 4820-01-443-5041 has 1 manufacturer part number on file: 1861 SWE 1/4 PART 9 (William Powell Company, the Dba Powell Valve Div the Starflo Corporation).
What NSN replaces 4820-01-443-5041?
7 possible matches (shared part number, not a government interchangeability claim): 4820-01-443-5042, 4820-01-443-5045, 4820-01-443-5057. Verify interchangeability with system specifications before substitution.
What are the specifications of 1861 SWE 1/4 PART 9?
Key specifications for 1861 SWE 1/4 PART 9: Valve Type for Which Designed: GLOBE; Valve Model Number for Which Designed: 1861 SWE; Material Document and Classification: ASTM A296, GRADE CF8M ASSN STD SINGLE MATERIAL RESPONSE; Valve Size for Which Designed: 0.250 INCHES IN. 6 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-443-5041 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.