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NSN 4820-01-175-1281Government record, cited
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Disk, Valve4820-01-175-1281

NSN 4820-01-175-1281 · NIIN 011751281 · Part number A10-7944-044-209
Velan Valve Corp. · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 57574
Government record, cited
NSN 4820-01-175-1281 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-175-1281. Manufacturer of record part number: A10-7944-044-209.
Also searched as  4820-01-175-1281 · 4820011751281 · NIIN 011751281 · 01-175-1281 · FSC 4820 Valves, Nonpowered · CAGE 57574 · A10-7944-044-209 · 7840-018 ITEM 5D · 7840-018 ITEM 41D · 7840-018 · 7840-018 ITEMS 5D,6,7,8,24,40
Nearby stock numbers  ·
⌀3.870 INCHES NOMINAL IN GATE VALVE PROFILE
4820-01-175-1281 — Valves, Nonpowered
Features
  • Disk,valve — FSC 4820
  • Shank Diameter: 3.870 INCHES NOMINAL IN
  • Flange Diameter: 2.883 INCHES NOMINAL IN
  • Style Designator: POPPET
  • Material: STEEL
  • 2 manufacturer part numbers on file
  • Manufacturer of record: Velan Valve Corp.
Identification
  • NSN: 4820-01-175-1281
  • NIIN: 011751281
  • FSC: 4820 — Valves, Nonpowered
  • FSG: 48 — Valves
  • Primary part number: A10-7944-044-209
  • Manufacturer: Velan Valve Corp.
General Description

The Disk,valve, cataloged under National Stock Number 4820-01-175-1281, 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 4 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 10 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-175-1281
Primary Part NumberA10-7944-044-209
Item NameDisk,valve
FSC / FSG4820 / 48 — Valves, Nonpowered
ManufacturerVelan Valve Corp.
StatusACTIVE
Shank Diameter3.870 INCHES NOMINAL IN
Flange Diameter2.883 INCHES NOMINAL IN
Style DesignatorPOPPET
MaterialSTEEL
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
⇄ Related Items 10
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4820-01-380-0632 POSSIBLE MATCH
VALVE,GLOBE
Possible match (shared part number)
4820-01-383-54269044-025-031 POSSIBLE MATCH
FLANGE,GLAND,VALVE
Possible match (shared part number)Velan Valve Corp.
4820-01-432-00057914-047-063 POSSIBLE MATCH
STEM,FLUID VALVE
Possible match (shared part number)Velan Valve Corp.
4820-01-432-30027840-018 POSSIBLE MATCH
VALVE ASSEMBLY,MANIFOLD
Possible match (shared part number)Velan Valve Corp.
4820-01-435-02628114-026-002-S POSSIBLE MATCH
DISK,VALVE
Possible match (shared part number)Velan Valve Corp.
4820-01-437-4651B10-2084P-02TS CDS-P239233G01 POSSIBLE MATCH
VALVE,STOP-CHECK
Possible match (shared part number)Velan Valve Corp.
4820-01-470-87728254-010-061 POSSIBLE MATCH
DISK,VALVE
Possible match (shared part number)Velan Valve Corp.
4820-01-470-87748114-027-002-S POSSIBLE MATCH
DISK,VALVE
Possible match (shared part number)Velan Valve Corp.
4820-01-470-8850B10-2084P-02TS (7840-018 REV X) POSSIBLE MATCH
VALVE,CHECK
Possible match (shared part number)Velan Valve Corp.
4820-01-470-90909564-022-063 POSSIBLE MATCH
RETAINER,DISK,VALVE
Possible match (shared part number)Velan Valve Corp.
Cross-Reference Index
Part NumberManufacturer
7840-018 ITEM 41D Velan Valve Corp. (USA)
A10-7944-044-209 PRIMARY Velan Valve Corp. (USA)
Reference documents
ReferenceMeaning
7840-018 ITEM 5D 5/9 Secondary reference
Velan Valve Corp.
7840-018 D/9 Drawing number reference only
Velan Valve Corp.
7840-018 ITEMS 5D,6,7,8,24,40 5/9 Secondary reference
Velan Valve Corp.
7944-044-002-S C/1 Advisory reference — outside the item-of-supply concept
Velan Valve Corp.
Related Parts
4820-01-380-0632POSSIBLE MATCH
VALVE,GLOBE
4820-01-383-5426POSSIBLE MATCH
FLANGE,GLAND,VALVE
9044-025-031
4820-01-432-0005POSSIBLE MATCH
STEM,FLUID VALVE
7914-047-063
4820-01-432-3002POSSIBLE MATCH
VALVE ASSEMBLY,MANIFOLD
7840-018
4820-01-435-0262POSSIBLE MATCH
DISK,VALVE
8114-026-002-S
4820-01-437-4651POSSIBLE MATCH
VALVE,STOP-CHECK
B10-2084P-02TS CDS-P239233G01
4820-01-470-8772POSSIBLE MATCH
DISK,VALVE
8254-010-061
4820-01-470-8774POSSIBLE MATCH
DISK,VALVE
8114-027-002-S
4820-01-470-8850POSSIBLE MATCH
VALVE,CHECK
B10-2084P-02TS (7840-018 REV X)
4820-01-470-9090POSSIBLE MATCH
RETAINER,DISK,VALVE
9564-022-063

Frequently Asked Questions

What is NSN 4820-01-175-1281?

NSN 4820-01-175-1281 is a Disk,valve, manufactured by Velan Valve Corp., classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-175-1281?

NSN 4820-01-175-1281 has 2 manufacturer part numbers on file: 7840-018 ITEM 41D (Velan Valve Corp.), A10-7944-044-209 (Velan Valve Corp.).

What NSN replaces 4820-01-175-1281?

10 possible matches (shared part number, not a government interchangeability claim): 4820-01-380-0632, 4820-01-383-5426, 4820-01-432-0005. Verify interchangeability with system specifications before substitution.

What are the specifications of A10-7944-044-209?

Key specifications for A10-7944-044-209: Shank Diameter: 3.870 INCHES NOMINAL IN; Flange Diameter: 2.883 INCHES NOMINAL IN; Overall Height: 2.375 INCHES NOMINAL IN; Style Designator: POPPET. 4 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-175-1281 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.

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✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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