PartsTable TECHNICAL DATA SHEET

NSN 4820-01-209-2928Government record, cited

Disk, Valve4820-01-209-2928

NSN 4820-01-209-2928 · NIIN 012092928

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-209-2928 · 4820012092928 · NIIN 012092928 · 01-209-2928 · FSC 4820 Valves, Nonpowered · SSN671-515-2047288 PIECE 1 · SSN671-515-2047288 · 71553-78X7 PIECE 1 · 71553-78X7

Nearby stock numbers ← 4820-01-209-2927 · 4820-01-209-2947 Valve, Diaphragm, Stop →

4820-01-209-2928 — Valves, Nonpowered

Features

Disk,valve — FSC 4820
Flange Seat to Disk End Height: 5.125 INCHES NOMINAL IN
Outside Diameter: 17.005 INCHES NOMINAL IN
Under Flange Height: 3.000 INCHES NOMINAL IN
Media for Which Designed: WATER, SALT
Material: COPPER ALLOY

Identification

NSN: 4820-01-209-2928
NIIN: 012092928
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Disk,valve, cataloged under National Stock Number 4820-01-209-2928, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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.

Technical Specifications

Parameter	Value
NSN	4820-01-209-2928
Item Name	Disk,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE
Flange Seat to Disk End Height	5.125 INCHES NOMINAL IN
Outside Diameter	17.005 INCHES NOMINAL IN
Under Flange Height	3.000 INCHES NOMINAL IN
Media for Which Designed	WATER, SALT
Material	COPPER ALLOY

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.

4820-01-209-338571553-78X7 PIECE 23 POSSIBLE MATCH

COVER,HALF,VALVE

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

5310-01-209-338771553-78X7 PIECE 6 POSSIBLE MATCH

NUT,DISK,VALVE

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

4820-01-209-458371553-78X7 PIECE 22 POSSIBLE MATCH

COVER,HALF

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

4820-01-209-458471553-78X7 PIECE 3 POSSIBLE MATCH

RETAINER,VALVE PAD

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

5365-01-212-241171553-78X7 PIECE 8 POSSIBLE MATCH

BUSHING,MACHINE THREAD

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

5342-01-220-9270SSN671-515-2047288 PIECE 20 POSSIBLE MATCH

DASHPOT

Possible match (shared part number)Naval Ship Systems Command

Cross-Reference Index

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

Reference documents

Reference	Meaning
SSN671-515-2047288 PIECE 1	5/2 Secondary reference U.S. Government activity
SSN671-515-2047288	D/9 Drawing number reference only U.S. Government activity
71553-78X7 PIECE 1	3/2 Design control — primary reference U.S. Government activity
71553-78X7	D/9 Drawing number reference only U.S. Government activity

Related Parts

4820-01-209-3385POSSIBLE MATCH

COVER,HALF,VALVE

71553-78X7 PIECE 23

5310-01-209-3387POSSIBLE MATCH

NUT,DISK,VALVE

71553-78X7 PIECE 6

4820-01-209-4583POSSIBLE MATCH

COVER,HALF

71553-78X7 PIECE 22

4820-01-209-4584POSSIBLE MATCH

RETAINER,VALVE PAD

71553-78X7 PIECE 3

5365-01-212-2411POSSIBLE MATCH

BUSHING,MACHINE THREAD

71553-78X7 PIECE 8

5342-01-220-9270POSSIBLE MATCH

DASHPOT

SSN671-515-2047288 PIECE 20

Frequently Asked Questions

What is NSN 4820-01-209-2928?

NSN 4820-01-209-2928 is a Disk,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.

What NSN replaces 4820-01-209-2928?

6 possible matches (shared part number, not a government interchangeability claim): 4820-01-209-3385, 5310-01-209-3387, 4820-01-209-4583. Verify interchangeability with system specifications before substitution.

What are the specifications of 4820-01-209-2928?

Key specifications for 4820-01-209-2928: Flange Seat to Disk End Height: 5.125 INCHES NOMINAL IN; Overall Height: 8.125 INCHES NOMINAL IN; Outside Diameter: 17.005 INCHES NOMINAL IN; Under Flange Height: 3.000 INCHES NOMINAL IN. 5 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-209-2928 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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