PartsTable TECHNICAL DATA SHEET

NSN 4820-01-193-3632Government record, cited

Disk, Valve4820-01-193-3632

NSN 4820-01-193-3632 · NIIN 011933632

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-193-3632 · 4820011933632 · NIIN 011933632 · 01-193-3632 · FSC 4820 Valves, Nonpowered · 77643-74 X 2 PIECE 3 · 77643-74X2 PIEC · SSN637-501-2143875 · SSN637-501-2143875 PIECE 3 · 77643-74X2

Nearby stock numbers ← 4820-01-193-3631 Disk, Valve · 4820-01-193-3633 Disk, Valve →

4820-01-193-3632 — Valves, Nonpowered

Features

Disk,valve — FSC 4820
Outside Diameter: 12.984 INCHES MINIMUM AND 12.988 INCHES MAXIMUM IN
Style Designator: SOLID
Media for Which Designed: AIR
Material: COPPER ALLOY

Identification

NSN: 4820-01-193-3632
NIIN: 011933632
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Disk,valve, cataloged under National Stock Number 4820-01-193-3632, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government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	4820-01-193-3632
Item Name	Disk,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE
Outside Diameter	12.984 INCHES MINIMUM AND 12.988 INCHES MAXIMUM IN
Style Designator	SOLID
Media for Which Designed	AIR
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 7

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

3040-01-194-191677643-74 X 2 PIECE 31 POSSIBLE MATCH

SHAFT,SHOULDERED

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

3040-01-194-674777643-74 X 2 PIECE 29 POSSIBLE MATCH

SHAFT,SHOULDERED

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

3040-01-194-674877643-74 X 2 PIECE 30 POSSIBLE MATCH

SHAFT,SHOULDERED

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

3020-01-194-69652143875 PIECE 12 POSSIBLE MATCH

GEAR,SPUR

Possible match (shared part number)Naval Ship Systems Command

3020-01-194-696677643-74 X 2 PIECE 13 POSSIBLE MATCH

GEAR,SPUR

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

3040-01-194-787777643-74 X 2 PIECE 22 POSSIBLE MATCH

SHAFT,SHOULDERED

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

3040-01-194-787877643-74X2 PC 23 POSSIBLE MATCH

SHAFT,SHOULDERED

Possible match (shared part number)Swiss Precision Products, Inc. Dba Swiss Precision Products Inc

Cross-Reference Index

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

Reference documents

Reference	Meaning
77643-74 X 2 PIECE 3	3/2 Design control — primary reference U.S. Government activity
77643-74X2 PIEC	C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity
SSN637-501-2143875	D/9 Drawing number reference only U.S. Government activity
SSN637-501-2143875 PIECE 3	5/2 Secondary reference U.S. Government activity
77643-74X2	D/9 Drawing number reference only U.S. Government activity

Related Parts

3040-01-194-1916POSSIBLE MATCH

SHAFT,SHOULDERED

77643-74 X 2 PIECE 31

3040-01-194-6747POSSIBLE MATCH

SHAFT,SHOULDERED

77643-74 X 2 PIECE 29

3040-01-194-6748POSSIBLE MATCH

SHAFT,SHOULDERED

77643-74 X 2 PIECE 30

3020-01-194-6965POSSIBLE MATCH

GEAR,SPUR

2143875 PIECE 12

3020-01-194-6966POSSIBLE MATCH

GEAR,SPUR

77643-74 X 2 PIECE 13

3040-01-194-7877POSSIBLE MATCH

SHAFT,SHOULDERED

77643-74 X 2 PIECE 22

3040-01-194-7878POSSIBLE MATCH

SHAFT,SHOULDERED

77643-74X2 PC 23

Frequently Asked Questions

What is NSN 4820-01-193-3632?

NSN 4820-01-193-3632 is a Disk,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.

What NSN replaces 4820-01-193-3632?

7 possible matches (shared part number, not a government interchangeability claim): 3040-01-194-1916, 3040-01-194-6747, 3040-01-194-6748. Verify interchangeability with system specifications before substitution.

What are the specifications of 4820-01-193-3632?

Key specifications for 4820-01-193-3632: Overall Height: 4.000 INCHES NOMINAL IN; Outside Diameter: 12.984 INCHES MINIMUM AND 12.988 INCHES MAXIMUM IN; Style Designator: SOLID; Media for Which Designed: AIR. 4 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-193-3632 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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