PartsTable TECHNICAL DATA SHEET

NSN 4820-01-579-7656Government record, cited

Valve, Calibrated Flow4820-01-579-7656

NSN 4820-01-579-7656 · NIIN 015797656

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-579-7656 · 4820015797656 · NIIN 015797656 · 01-579-7656 · FSC 4820 Valves, Nonpowered · 8829-B · 8829-B FIG. NO. 2354-1181ACL · 2354-1181ACL

Nearby stock numbers ← 4820-01-579-7651 Parts Kit, Valve · 4820-01-579-7710 Valve, Check →

4820-01-579-7656 — Valves, Nonpowered

Features

Valve,calibrated Flow — FSC 4820

Identification

NSN: 4820-01-579-7656
NIIN: 015797656
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Valve,calibrated Flow, cataloged under National Stock Number 4820-01-579-7656, 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Supply Class 4820 (Valves, Nonpowered) of the Valves group. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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	Valve,calibrated Flow
FSC / FSG	4820 — Valves, Nonpowered (FSG 48)

Technical Specifications

Parameter	Value
NSN	4820-01-579-7656
Item Name	Valve,calibrated Flow
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 3

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

4820-01-581-88852354-1171ACL POSSIBLE MATCH

VALVE,CALIBRATED FLOW

Possible match (shared part number)Romac Industries, Inc. Dba Hays Fluid Controls Div Hays Fluid Controls Division

4820-01-581-88915871-12SK POSSIBLE MATCH

PARTS KIT,VALVE

Possible match (shared part number)Romac Industries, Inc. Dba Hays Fluid Controls Div Hays Fluid Controls Division

4820-01-583-37805873-13SK POSSIBLE MATCH

PARTS KIT,VALVE

Possible match (shared part number)Romac Industries, Inc. Dba Hays Fluid Controls Div Hays Fluid Controls Division

Cross-Reference Index

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

Reference documents

Reference	Meaning
8829-B	D/9 Drawing number reference only U.S. Government activity
8829-B FIG. NO. 2354-1181ACL	5/2 Secondary reference U.S. Government activity
2354-1181ACL	3/2 Design control — primary reference U.S. Government activity

Related Parts

4820-01-581-8885POSSIBLE MATCH

VALVE,CALIBRATED FLOW

2354-1171ACL

4820-01-581-8891POSSIBLE MATCH

PARTS KIT,VALVE

5871-12SK

4820-01-583-3780POSSIBLE MATCH

PARTS KIT,VALVE

5873-13SK

Frequently Asked Questions

What is NSN 4820-01-579-7656?

NSN 4820-01-579-7656 is a Valve,calibrated Flow, classified under FSC 4820, Valves, Nonpowered. Status: active.

What NSN replaces 4820-01-579-7656?

3 possible matches (shared part number, not a government interchangeability claim): 4820-01-581-8885, 4820-01-581-8891, 4820-01-583-3780. Verify interchangeability with system specifications before substitution.

Is NSN 4820-01-579-7656 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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