PartsTable TECHNICAL DATA SHEET

NSN 4820-01-502-9143Government record, cited

Disk, Valve4820-01-502-9143

NSN 4820-01-502-9143 · NIIN 015029143

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-502-9143 · 4820015029143 · NIIN 015029143 · 01-502-9143 · FSC 4820 Valves, Nonpowered · 284381-0004 · 100041-0001 · 284381-0004 ITEM 1

Nearby stock numbers ← 4820-01-502-9039 Valve, Safety Relief · 4820-01-502-9208 Ball, Valve, Ported →

4820-01-502-9143 — Valves, Nonpowered

Features

Disk,valve — FSC 4820

Identification

NSN: 4820-01-502-9143
NIIN: 015029143
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Disk,valve, cataloged under National Stock Number 4820-01-502-9143, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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	Disk,valve
FSC / FSG	4820 — Valves, Nonpowered (FSG 48)

Technical Specifications

Parameter	Value
NSN	4820-01-502-9143
Item Name	Disk,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
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 Items 4

Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.

4820-01-503-0280197879-0013 POSSIBLE MATCH

RETAINER,DISK,VALVE

Possible match (shared part number)Marotta Controls Inc

4820-01-503-0286284381-0004 POSSIBLE MATCH

VALVE,FLOW CONTROL

Possible match (shared part number)Marotta Controls Inc

4820-01-525-7164100058-0001 POSSIBLE MATCH

DISK,VALVE

Possible match (shared part number)Marotta Controls Inc

5340-01-586-0777 POSSIBLE MATCH

COVER,ACCESS

Possible match (shared part number)

Cross-Reference Index

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
284381-0004	D/9 Drawing number reference only U.S. Government activity
100041-0001	3/2 Design control — primary reference U.S. Government activity
284381-0004 ITEM 1	5/2 Secondary reference U.S. Government activity

Related Parts

4820-01-503-0280POSSIBLE MATCH

RETAINER,DISK,VALVE

197879-0013

4820-01-503-0286POSSIBLE MATCH

VALVE,FLOW CONTROL

284381-0004

4820-01-525-7164POSSIBLE MATCH

DISK,VALVE

100058-0001

5340-01-586-0777POSSIBLE MATCH

COVER,ACCESS

Frequently Asked Questions

What is NSN 4820-01-502-9143?

NSN 4820-01-502-9143 is a Disk,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.

What NSN replaces 4820-01-502-9143?

4 possible matches (shared part number, not a government interchangeability claim): 4820-01-503-0280, 4820-01-503-0286, 4820-01-525-7164. Verify interchangeability with system specifications before substitution.

Is NSN 4820-01-502-9143 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.

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