PartsTable TECHNICAL DATA SHEET

NSN 4820-01-451-1824Government record, cited

Piston, Valve4820-01-451-1824

NSN 4820-01-451-1824 · NIIN 014511824

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-451-1824 · 4820014511824 · NIIN 014511824 · 01-451-1824 · FSC 4820 Valves, Nonpowered · 236765 · 236765 ITEM NO 15 · 196575-0030

Nearby stock numbers ← 4820-01-451-1811 Disk, Valve · 4820-01-451-1830 Stem, Fluid Valve →

4820-01-451-1824 — Valves, Nonpowered

Features

Piston,valve — FSC 4820

Identification

NSN: 4820-01-451-1824
NIIN: 014511824
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Piston,valve, cataloged under National Stock Number 4820-01-451-1824, 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Supply Class 4820 (Valves, Nonpowered) of the Valves group. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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	Piston,valve
FSC / FSG	4820 — Valves, Nonpowered (FSG 48)

Technical Specifications

Parameter	Value
NSN	4820-01-451-1824
Item Name	Piston,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.

4820-01-451-1999180429-0030 POSSIBLE MATCH

DISK,VALVE

Possible match (shared part number)Marotta Controls Inc

4820-01-451-2000180428-0030 POSSIBLE MATCH

SEAT,VALVE

Possible match (shared part number)Marotta Controls Inc

4820-01-451-2254196996-0030 POSSIBLE MATCH

PISTON,VALVE

Possible match (shared part number)Marotta Controls Inc

4820-01-451-3723188445-0030 POSSIBLE MATCH

GUIDE,VALVE STEM

Possible match (shared part number)Marotta Controls Inc

Cross-Reference Index

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

Reference documents

Reference	Meaning
236765	D/9 Drawing number reference only U.S. Government activity
236765 ITEM NO 15	5/2 Secondary reference U.S. Government activity
196575-0030	3/2 Design control — primary reference U.S. Government activity

Related Parts

4820-01-451-1999POSSIBLE MATCH

DISK,VALVE

180429-0030

4820-01-451-2000POSSIBLE MATCH

SEAT,VALVE

180428-0030

4820-01-451-2254POSSIBLE MATCH

PISTON,VALVE

196996-0030

4820-01-451-3723POSSIBLE MATCH

GUIDE,VALVE STEM

188445-0030

Frequently Asked Questions

What is NSN 4820-01-451-1824?

NSN 4820-01-451-1824 is a Piston,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.

What NSN replaces 4820-01-451-1824?

4 possible matches (shared part number, not a government interchangeability claim): 4820-01-451-1999, 4820-01-451-2000, 4820-01-451-2254. Verify interchangeability with system specifications before substitution.

Is NSN 4820-01-451-1824 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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