Valve, Vacuum Breaking4820-01-035-0811

NSN 4820-01-035-0811 · NIIN 010350811

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-035-0811 · 4820010350811 · NIIN 010350811 · 01-035-0811 · FSC 4820 Valves, Nonpowered

Nearby stock numbers ← 4820-01-035-0792 Ring Assy, Piston · 4820-01-035-0812 Valve, Safety Relief →

4820-01-035-0811 — Valves, Nonpowered

Features

Valve,vacuum Breaking — FSC 4820
Flow Control Device: POPPET
Temp Rating: 160.0 FAHRENHEIT DEGF
Temp Rating: -65.0 FAHRENHEIT DEGF
Body Style: SINGLE CONNECTION, STRAIGHT FLOW
End Connection Quantity: 1
Temp Adjustability: NOT ADJUSTABLE
Material: STEEL CORROSION RESISTING BODY

Identification

NSN: 4820-01-035-0811
NIIN: 010350811
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Valve,vacuum Breaking, cataloged under National Stock Number 4820-01-035-0811, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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	4820-01-035-0811
Item Name	Valve,vacuum Breaking
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE
Flow Control Device	POPPET
Temp Rating	160.0 FAHRENHEIT DEGF
Temp Rating	-65.0 FAHRENHEIT DEGF
Body Style	SINGLE CONNECTION, STRAIGHT FLOW
End Connection Quantity	1
Temp Adjustability	NOT ADJUSTABLE
Material	STEEL CORROSION RESISTING BODY
Media for Which Designed	AIR

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 1

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

3040-01-577-92582391256 POSSIBLE MATCH

GEARSHAFT,MULTIPLE GEARS

Possible match (shared part number)Caterpillar Inc Div Caterpillar Defense

Cross-Reference Index

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

Reference documents

Reference	Meaning
2391256	3/2 Design control — primary reference U.S. Government activity

Related Parts

3040-01-577-9258POSSIBLE MATCH

GEARSHAFT,MULTIPLE GEARS

2391256

Frequently Asked Questions

What is NSN 4820-01-035-0811?

NSN 4820-01-035-0811 is a Valve,vacuum Breaking, classified under FSC 4820, Valves, Nonpowered. Status: active.

What NSN replaces 4820-01-035-0811?

1 possible match (shared part number, not a government interchangeability claim): 3040-01-577-9258. Verify interchangeability with system specifications before substitution.

What are the specifications of 4820-01-035-0811?

Key specifications for 4820-01-035-0811: Flow Control Device: POPPET; Temp Rating: 160.0 FAHRENHEIT DEGF; Temp Rating: -65.0 FAHRENHEIT DEGF; Body Style: SINGLE CONNECTION, STRAIGHT FLOW. 8 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-035-0811 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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