PartsTable TECHNICAL DATA SHEET

NSN 4820-01-156-5889Government record, cited

Piston, Valve4820-01-156-5889

NSN 4820-01-156-5889 · NIIN 011565889

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-156-5889 · 4820011565889 · NIIN 011565889 · 01-156-5889 · FSC 4820 Valves, Nonpowered · F3C10089 · F3C10288-2 · F2B10242 · F3C10089 ITEM 2 · F3C10321 ITEM 2

Nearby stock numbers ← 4820-01-156-5888 Plate, Strainer · 4820-01-156-5890 Stem, Fluid Valve →

4820-01-156-5889 — Valves, Nonpowered

Features

Piston,valve — FSC 4820

Identification

NSN: 4820-01-156-5889
NIIN: 011565889
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Piston,valve, cataloged under National Stock Number 4820-01-156-5889, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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.

Catalog Facts

Item Name	Piston,valve
FSC / FSG	4820 — Valves, Nonpowered (FSG 48)

Technical Specifications

Parameter	Value
NSN	4820-01-156-5889
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 6

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

4820-01-165-1505F2B10154-3DA POSSIBLE MATCH

DISK,VALVE

Possible match (shared part number)Vacco Industries

4820-01-195-3119 POSSIBLE MATCH

PISTON,VALVE

Possible match (shared part number)

4820-01-283-3162 POSSIBLE MATCH

PISTON,VALVE

Possible match (shared part number)

4820-01-294-4414F2B10242-4MFCP POSSIBLE MATCH

PISTON,VALVE

Possible match (shared part number)Naval Inventory Control Point Mechanicsburg

4820-01-298-2247F3C10089-045 POSSIBLE MATCH

VALVE,REGULATING,SYSTEM PRESSURE

Possible match (shared part number)Vacco Industries

4820-01-633-6650 POSSIBLE MATCH

PISTON,VALVE

Possible match (shared part number)

Cross-Reference Index

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

Reference documents

Reference	Meaning
F3C10089	D/9 Drawing number reference only U.S. Government activity
F3C10288-2	3/2 Design control — primary reference U.S. Government activity
F2B10242	D/9 Drawing number reference only U.S. Government activity
F3C10089 ITEM 2	5/2 Secondary reference U.S. Government activity
F3C10321 ITEM 2	C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity
F2B10242-4MF	3/2 Design control — primary reference U.S. Government activity

Related Parts

4820-01-165-1505POSSIBLE MATCH

DISK,VALVE

F2B10154-3DA

4820-01-195-3119POSSIBLE MATCH

PISTON,VALVE

4820-01-283-3162POSSIBLE MATCH

PISTON,VALVE

4820-01-294-4414POSSIBLE MATCH

PISTON,VALVE

F2B10242-4MFCP

4820-01-298-2247POSSIBLE MATCH

VALVE,REGULATING,SYSTEM PRESSURE

F3C10089-045

4820-01-633-6650POSSIBLE MATCH

PISTON,VALVE

Frequently Asked Questions

What is NSN 4820-01-156-5889?

NSN 4820-01-156-5889 is a Piston,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.

What NSN replaces 4820-01-156-5889?

6 possible matches (shared part number, not a government interchangeability claim): 4820-01-165-1505, 4820-01-195-3119, 4820-01-283-3162. Verify interchangeability with system specifications before substitution.

Is NSN 4820-01-156-5889 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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