NSN 4820-01-433-2630 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-433-2630. Manufacturer of record part number: A12-7533-702-488.
Furnished Items and Quantity: 1 DISK AND 1AJW1 NUT
Valve Type for Which Designed: GLOBE
Largest Outside Diameter: 4.995 INCHES NOMINAL IN
Stem Actuating End Type: SQUARE AND THREADED EXTERNALLY
Material Document and Classification: ASTM A105 ASSN STD SINGLE MATERIAL RESPONSE AND ASTM A479 ASSN STD SINGLE MATERIAL RESPONSE AND ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE AND ASTM A276 ASSN STD SINGLE MATERIAL RESPONSE
Features Provided: THREADED
Valve Size for Which Designed: 4.000 INCHES IN
Identification
NSN: 4820-01-433-2630
NIIN: 014332630
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: A12-7533-702-488
Manufacturer: Velan Valve Corp.
General Description
The Stem,fluid Valve, cataloged under National Stock Number 4820-01-433-2630, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Velan Valve Corp.. Government technical data includes 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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
4820-01-433-2630
Primary Part Number
A12-7533-702-488
Item Name
Stem,fluid Valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Velan Valve Corp.
Status
ACTIVE
Furnished Items and Quantity
1 DISK AND 1AJW1 NUT
Valve Type for Which Designed
GLOBE
Largest Outside Diameter
4.995 INCHES NOMINAL IN
Stem Actuating End Type
SQUARE AND THREADED EXTERNALLY
Material Document and Classification
ASTM A105 ASSN STD SINGLE MATERIAL RESPONSE AND ASTM A479 ASSN STD SINGLE MATERIAL RESPONSE AND ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE AND ASTM A276 ASSN STD SINGLE MATERIAL RESPONSE
Features Provided
THREADED
Valve Size for Which Designed
4.000 INCHES IN
Material
STEEL CORROSION RESISTING
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.
4820-01-449-27437543-700-002SPOSSIBLE MATCH
SEAT,VALVE
Possible match (shared part number)Velan Valve Corp.
4820-01-449-3631A12-7533-702-002-APOSSIBLE MATCH
STEM,FLUID VALVE
Possible match (shared part number)Velan Valve Corp.
4820-01-466-83437542-701-002-SPOSSIBLE MATCH
SEAT,VALVE
Possible match (shared part number)Velan Valve Corp.
5310-01-468-87807632-010-052POSSIBLE MATCH
NUT,PLAIN,ROUND
Possible match (shared part number)Velan Valve Corp.
4820-01-469-30547552-017-063POSSIBLE MATCH
STEM,FLUID VALVE
Possible match (shared part number)Velan Valve Corp.
4820-01-469-3219A10-7532713-0002-SPOSSIBLE MATCH
DISK,VALVE
Possible match (shared part number)Velan Valve Corp.
NSN 4820-01-433-2630 is a Stem,fluid Valve, manufactured by Velan Valve Corp., classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-433-2630?
NSN 4820-01-433-2630 has 1 manufacturer part number on file: A12-7533-702-488 (Velan Valve Corp.).
What NSN replaces 4820-01-433-2630?
6 possible matches (shared part number, not a government interchangeability claim): 4820-01-449-2743, 4820-01-449-3631, 4820-01-466-8343. Verify interchangeability with system specifications before substitution.
What are the specifications of A12-7533-702-488?
Key specifications for A12-7533-702-488: Furnished Items and Quantity: 1 DISK AND 1AJW1 NUT; Valve Type for Which Designed: GLOBE; Largest Outside Diameter: 4.995 INCHES NOMINAL IN; Stem Actuating End Type: SQUARE AND THREADED EXTERNALLY. 8 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-433-2630 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.