PartsTable TECHNICAL DATA SHEET

NSN 4820-01-691-2409Government record, cited

Valve, Check4820-01-691-2409

NSN 4820-01-691-2409 · NIIN 016912409

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-691-2409 · 4820016912409 · NIIN 016912409 · 01-691-2409 · FSC 4820 Valves, Nonpowered · 212411 P/N 212411-01D · 212411 · 212411-01D

Nearby stock numbers ← 4820-01-691-2386 Valve, Throttle · 4820-01-691-2457 Valve, Safety Relief →

4820-01-691-2409 — Valves, Nonpowered

Features

Valve,check — FSC 4820

Identification

NSN: 4820-01-691-2409
NIIN: 016912409
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Valve,check, cataloged under National Stock Number 4820-01-691-2409, 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Supply Class 4820 (Valves, Nonpowered) of the Valves group. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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,check
FSC / FSG	4820 — Valves, Nonpowered (FSG 48)

Technical Specifications

Parameter	Value
NSN	4820-01-691-2409
Item Name	Valve,check
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 5

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

4820-01-691-2943212411-03B POSSIBLE MATCH

VALVE,CHECK

Possible match (shared part number)Griswold Industries Dba Cla-Val Co

4820-01-691-5570212411-04A POSSIBLE MATCH

VALVE,CHECK

Possible match (shared part number)Griswold Industries Dba Cla-Val Co

4820-01-691-7096212411-02C POSSIBLE MATCH

VALVE,CHECK

Possible match (shared part number)Griswold Industries Dba Cla-Val Co

4820-01-692-240681497A POSSIBLE MATCH

INDICATOR,VALVE OPENING

Possible match (shared part number)Griswold Industries Dba Cla-Val Co

4820-01-692-2417212411-05K POSSIBLE MATCH

VALVE,CHECK

Possible match (shared part number)Griswold Industries Dba Cla-Val Co

Cross-Reference Index

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

Reference documents

Reference	Meaning
212411 P/N 212411-01D	C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity
212411	D/9 Drawing number reference only U.S. Government activity
212411-01D	3/2 Design control — primary reference U.S. Government activity

Related Parts

4820-01-691-2943POSSIBLE MATCH

VALVE,CHECK

212411-03B

4820-01-691-5570POSSIBLE MATCH

VALVE,CHECK

212411-04A

4820-01-691-7096POSSIBLE MATCH

VALVE,CHECK

212411-02C

4820-01-692-2406POSSIBLE MATCH

INDICATOR,VALVE OPENING

81497A

4820-01-692-2417POSSIBLE MATCH

VALVE,CHECK

212411-05K

Frequently Asked Questions

What is NSN 4820-01-691-2409?

NSN 4820-01-691-2409 is a Valve,check, classified under FSC 4820, Valves, Nonpowered. Status: active.

What NSN replaces 4820-01-691-2409?

5 possible matches (shared part number, not a government interchangeability claim): 4820-01-691-2943, 4820-01-691-5570, 4820-01-691-7096. Verify interchangeability with system specifications before substitution.

Is NSN 4820-01-691-2409 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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