NSN 4820-01-129-5369 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-129-5369. Manufacturer of record part number: 33311-3PC4 2IN.
Nearby stock numbers← 4820-01-129-5368 Disk, Valve
·
4820-01-129-5469 Sleeve and Slide, Directional Con →
4820-01-129-5369 — Valves, Nonpowered
Features
Disk,valve — FSC 4820
Shank Diameter: 1.812 INCHES NOMINAL IN
Nominal Thread Size: 1.375 INCHES IN
Inside Diameter: 0.937 INCHES NOMINAL IN
Material: STEEL CORROSION RESISTING
Thread Series Designator: UNF
2 manufacturer part numbers on file
Manufacturer of record: Velan Valve Corp.
Identification
NSN: 4820-01-129-5369
NIIN: 011295369
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 33311-3PC4 2IN
Manufacturer: Velan Valve Corp.
General Description
The Disk,valve, cataloged under National Stock Number 4820-01-129-5369, 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 5 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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
4820-01-129-5369
Primary Part Number
33311-3PC4 2IN
Item Name
Disk,valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Velan Valve Corp.
Status
ACTIVE
Shank Diameter
1.812 INCHES NOMINAL IN
Nominal Thread Size
1.375 INCHES IN
Inside Diameter
0.937 INCHES NOMINAL IN
Material
STEEL CORROSION RESISTING
Thread Series Designator
UNF
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.
4820-01-130-5373F06-3074B-02TSPOSSIBLE MATCH
VALVE,GLOBE
Possible match (shared part number)Velan Valve Corp.
4820-01-133-4119BV-2501 1 1/2INPOSSIBLE MATCH
STEM,NEEDLE VALVE
Possible match (shared part number)Velan Valve Corp.
4820-01-185-25567-BV-2001POSSIBLE MATCH
DISK,VALVE
Possible match (shared part number)Velan Valve Corp.
4820-01-205-0290BV-2501 1 1-4INPOSSIBLE MATCH
STEM,NEEDLE VALVE
Possible match (shared part number)Velan Valve Corp.
4820-01-205-0336BV-200 1 1-4INPOSSIBLE MATCH
DISK,VALVE
Possible match (shared part number)Velan Valve Corp.
NSN 4820-01-129-5369 is a Disk,valve, manufactured by Velan Valve Corp., classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-129-5369?
NSN 4820-01-129-5369 has 2 manufacturer part numbers on file: 33311-3PC4 2IN (Velan Valve Corp.), 8BV-2001PC4 (Velan Valve Corp.).
What NSN replaces 4820-01-129-5369?
6 possible matches (shared part number, not a government interchangeability claim): 4820-01-130-5373, 4820-01-133-4119, 4820-01-185-2556. Verify interchangeability with system specifications before substitution.
What are the specifications of 33311-3PC4 2IN?
Key specifications for 33311-3PC4 2IN: Shank Diameter: 1.812 INCHES NOMINAL IN; Overall Height: 1.125 INCHES NOMINAL IN; Nominal Thread Size: 1.375 INCHES IN; Inside Diameter: 0.937 INCHES NOMINAL IN. 5 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-129-5369 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.