PartsTable TECHNICAL DATA SHEET

NSN 4820-01-308-1639Government record, cited

Operator, Valve, Me4820-01-308-1639

NSN 4820-01-308-1639 · NIIN 013081639 · Part number 01-435-0374/3P3499A

Flowserve Corp Dba Automax Actuators Div Flowserve Us Company · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 52374

Government record, cited

NSN 4820-01-308-1639 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-308-1639. Manufacturer of record part number: 01-435-0374/3P3499A.

Also searched as 4820-01-308-1639 · 4820013081639 · NIIN 013081639 · 01-308-1639 · FSC 4820 Valves, Nonpowered · CAGE 52374 · 01-435-0374/3P3499A · 01-435-0374-4/3 · 01-435-0374-4

Nearby stock numbers ← 4820-01-308-1592 Valve, Regulating, Fluid Pressure · 4820-01-308-1646 Flame Arrester, Ven →

4820-01-308-1639 — Valves, Nonpowered

Features

Operator,valve,me — FSC 4820
2 manufacturer part numbers on file
Manufacturer of record: Flowserve Corp Dba Automax Actuators Div Flowserve Us Company

Identification

NSN: 4820-01-308-1639
NIIN: 013081639
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 01-435-0374/3P3499A
Manufacturer: Flowserve Corp Dba Automax Actuators Div Flowserve Us Company

General Description

The Operator,valve,me, cataloged under National Stock Number 4820-01-308-1639, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Flowserve Corp Dba Automax Actuators Div Flowserve Us Company. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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	Operator,valve,me
FSC / FSG	4820 — Valves, Nonpowered (FSG 48)
Manufacturers	Flowserve Corp Dba Automax Actuators Div Flowserve Us Company (CAGE 52374)

Technical Specifications

Parameter	Value
NSN	4820-01-308-1639
Primary Part Number	01-435-0374/3P3499A
Item Name	Operator,valve,me
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Flowserve Corp Dba Automax Actuators Div Flowserve Us Company
Status	ACTIVE

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)

⇄ Related Items 4

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

4810-01-308-172461-201-0100-3 POSSIBLE MATCH

SLEEVE,DRIVE,VALVE

Possible match (shared part number)Flowserve Corp Dba Automax Actuators Div Flowserve Us Company

4810-01-308-172561-573-0022-1 POSSIBLE MATCH

SLEEVE,DRIVE,VALVE

Possible match (shared part number)Flowserve Corp Dba Automax Actuators Div Flowserve Us Company

3020-01-308-435361-420-0216-2 POSSIBLE MATCH

GEAR,SPUR

Possible match (shared part number)Flowserve Corp Dba Automax Actuators Div Flowserve Us Company

3040-01-308-714161-240-0014-2 POSSIBLE MATCH

CYLINDER ASSEMBLY,ACTUATING,LINE

Possible match (shared part number)Flowserve Corp Dba Automax Actuators Div Flowserve Us Company

Cross-Reference Index

Part Number	Manufacturer
01-435-0374/3P3499A PRIMARY	Flowserve Corp Dba Automax Actuators Div Flowserve Us Company (USA)
01-435-0374-4	Flowserve Corp Dba Automax Actuators Div Flowserve Us Company (USA)

Reference documents

Reference	Meaning
01-435-0374-4/3	C/1 Advisory reference — outside the item-of-supply concept Flowserve Corp Dba Automax Actuators Div Flowserve Us Company

Related Parts

4810-01-308-1724POSSIBLE MATCH

SLEEVE,DRIVE,VALVE

61-201-0100-3

4810-01-308-1725POSSIBLE MATCH

SLEEVE,DRIVE,VALVE

61-573-0022-1

3020-01-308-4353POSSIBLE MATCH

GEAR,SPUR

61-420-0216-2

3040-01-308-7141POSSIBLE MATCH

CYLINDER ASSEMBLY,ACTUATING,LINE

61-240-0014-2

Frequently Asked Questions

What is NSN 4820-01-308-1639?

NSN 4820-01-308-1639 is a Operator,valve,me, manufactured by Flowserve Corp Dba Automax Actuators Div Flowserve Us Company, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-308-1639?

NSN 4820-01-308-1639 has 2 manufacturer part numbers on file: 01-435-0374/3P3499A (Flowserve Corp Dba Automax Actuators Div Flowserve Us Company), 01-435-0374-4 (Flowserve Corp Dba Automax Actuators Div Flowserve Us Company).

What NSN replaces 4820-01-308-1639?

4 possible matches (shared part number, not a government interchangeability claim): 4810-01-308-1724, 4810-01-308-1725, 3020-01-308-4353. Verify interchangeability with system specifications before substitution.

Is NSN 4820-01-308-1639 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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