Indicator, Valve Opening4820-01-144-0283

NSN 4820-01-144-0283 · NIIN 011440283

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-144-0283 · 4820011440283 · NIIN 011440283 · 01-144-0283 · FSC 4820 Valves, Nonpowered · 87791-4602 · 87791-4602 ITEM 25 · 516-4788433 · 516-4788433 ITEM 25

Nearby stock numbers ← 4820-01-144-0280 Disk, Valve · 4820-01-144-0284 →

4820-01-144-0283 — Valves, Nonpowered

Features

Indicator,valve Opening — FSC 4820
Dial Outside Diameter: 2.330 INCHES NOMINAL IN

Identification

NSN: 4820-01-144-0283
NIIN: 011440283
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Indicator,valve Opening, cataloged under National Stock Number 4820-01-144-0283, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-144-0283
Item Name	Indicator,valve Opening
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE
Dial Outside Diameter	2.330 INCHES NOMINAL IN

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 2

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

4320-01-146-1089516-4788433 ITEM 2 POSSIBLE MATCH

FLANGE MANIFOLD,PUMP

Possible match (shared part number)Naval Ship Systems Command

4820-01-189-88214788433-0027 POSSIBLE MATCH

STEM,FLUID VALVE

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

Cross-Reference Index

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

Reference documents

Reference	Meaning
87791-4602	D/9 Drawing number reference only U.S. Government activity
87791-4602 ITEM 25	3/2 Design control — primary reference U.S. Government activity
516-4788433	D/9 Drawing number reference only U.S. Government activity
516-4788433 ITEM 25	5/2 Secondary reference U.S. Government activity

Related Parts

4320-01-146-1089POSSIBLE MATCH

FLANGE MANIFOLD,PUMP

516-4788433 ITEM 2

4820-01-189-8821POSSIBLE MATCH

STEM,FLUID VALVE

4788433-0027

Frequently Asked Questions

What is NSN 4820-01-144-0283?

NSN 4820-01-144-0283 is a Indicator,valve Opening, classified under FSC 4820, Valves, Nonpowered. Status: active.

What NSN replaces 4820-01-144-0283?

2 possible matches (shared part number, not a government interchangeability claim): 4320-01-146-1089, 4820-01-189-8821. Verify interchangeability with system specifications before substitution.

What are the specifications of 4820-01-144-0283?

Key specifications for 4820-01-144-0283: Dial Outside Diameter: 2.330 INCHES NOMINAL IN; Special Features: DEPTH 0.250 IN.;MTG DIA 2.330 IN.;DIAL MARKINGS:SHUT-OPEN-BLEED;MARKING/SYMBOL QTY 3 IN; End Item Identification: NAVY MANIFOLD LAD PUMP AND ACC DISCHARGE DET MODEL O. 51L-4788433. 1 specification is documented in the U.S. Government catalog.

Is NSN 4820-01-144-0283 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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