PartsTable TECHNICAL DATA SHEET

NSN 4820-01-516-8281Government record, cited

Disk, Valve4820-01-516-8281

NSN 4820-01-516-8281 · NIIN 015168281

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-516-8281 · 4820015168281 · NIIN 015168281 · 01-516-8281 · FSC 4820 Valves, Nonpowered · 803-1385789TYPB SG 1 PC NO.6 · 803-1385789TYP-3IN PIECE 6 · 803-1385789TYP SH 1 PC NO.6 · 1385789 · 803-1385789TYPB-3IN PIECE 6

Nearby stock numbers ← 4820-01-516-8279 Cock, Poppet Drain · 4820-01-516-8316 Cap, Valve →

4820-01-516-8281 — Valves, Nonpowered

Features

Disk,valve — FSC 4820
Shank Diameter: 2.000 INCHES NOMINAL IN
Flange Seat to Disk End Height: 0.250 INCHES NOMINAL IN
Outside Diameter: 4.125 INCHES NOMINAL IN
Style Designator: SWING CHECK
Material Document and Classification: ASTM B61 NATIONAL SPEC SINGLE MATERIAL RESPONSE
Material: COPPER ALLOY 922

Identification

NSN: 4820-01-516-8281
NIIN: 015168281
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Disk,valve, cataloged under National Stock Number 4820-01-516-8281, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 6 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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	4820-01-516-8281
Item Name	Disk,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE
Shank Diameter	2.000 INCHES NOMINAL IN
Flange Seat to Disk End Height	0.250 INCHES NOMINAL IN
Outside Diameter	4.125 INCHES NOMINAL IN
Style Designator	SWING CHECK
Material Document and Classification	ASTM B61 NATIONAL SPEC SINGLE MATERIAL RESPONSE
Material	COPPER ALLOY 922

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.

4730-01-520-39591385789 PC.3(1-1/2 INCH DIA) POSSIBLE MATCH

STRAINER ELEMENT,SEDIMENT

Possible match (shared part number)Naval Ship Systems Command

4730-01-520-39821385789 PC. NO. 3-2-INCH POSSIBLE MATCH

STRAINER ELEMENT,SEDIMENT

Possible match (shared part number)Naval Ship Systems Command

5305-01-545-8593803-1385789PC9 POSSIBLE MATCH

SCREW,MACHINE

Possible match (shared part number)Naval Ship Systems Command

4820-01-547-2839803-1385789TYG 2IN SH 7 PC NO 6 POSSIBLE MATCH

DISK,VALVE

Possible match (shared part number)Naval Ship Systems Command

4510-01-658-96211385789 POSSIBLE MATCH

STRAINER,WASTE DRAIN

Possible match (shared part number)Naval Ship Systems Command

2040-01-687-6107D3BK309-S97 POSSIBLE MATCH

DRAIN KIT,DECK

Possible match (shared part number)Loeffler Corp

Cross-Reference Index

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

Reference documents

Reference	Meaning
803-1385789TYPB SG 1 PC NO.6	5/2 Secondary reference U.S. Government activity
803-1385789TYP-3IN PIECE 6	5/9 Secondary reference U.S. Government activity
803-1385789TYP SH 1 PC NO.6	5/9 Secondary reference U.S. Government activity
1385789	D/9 Drawing number reference only U.S. Government activity
803-1385789TYPB-3IN PIECE 6	3/2 Design control — primary reference U.S. Government activity

Related Parts

4730-01-520-3959POSSIBLE MATCH

STRAINER ELEMENT,SEDIMENT

1385789 PC.3(1-1/2 INCH DIA)

4730-01-520-3982POSSIBLE MATCH

STRAINER ELEMENT,SEDIMENT

1385789 PC. NO. 3-2-INCH

5305-01-545-8593POSSIBLE MATCH

SCREW,MACHINE

803-1385789PC9

4820-01-547-2839POSSIBLE MATCH

DISK,VALVE

803-1385789TYG 2IN SH 7 PC NO 6

4510-01-658-9621POSSIBLE MATCH

STRAINER,WASTE DRAIN

1385789

2040-01-687-6107POSSIBLE MATCH

DRAIN KIT,DECK

D3BK309-S97

Frequently Asked Questions

What is NSN 4820-01-516-8281?

NSN 4820-01-516-8281 is a Disk,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.

What NSN replaces 4820-01-516-8281?

6 possible matches (shared part number, not a government interchangeability claim): 4730-01-520-3959, 4730-01-520-3982, 5305-01-545-8593. Verify interchangeability with system specifications before substitution.

What are the specifications of 4820-01-516-8281?

Key specifications for 4820-01-516-8281: Shank Diameter: 2.000 INCHES NOMINAL IN; Flange Seat to Disk End Height: 0.250 INCHES NOMINAL IN; Outside Diameter: 4.125 INCHES NOMINAL IN; Style Designator: SWING CHECK. 6 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-516-8281 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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