PartsTable TECHNICAL DATA SHEET

NSN 4820-01-478-9041Government record, cited

Valve, Regulating, Fluid Pressure4820-01-478-9041

NSN 4820-01-478-9041 · NIIN 014789041

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-478-9041 · 4820014789041 · NIIN 014789041 · 01-478-9041 · FSC 4820 Valves, Nonpowered · 186721-0001 · 284593-0001 ITEM 18 · 284593-0001

Nearby stock numbers ← 4820-01-478-8993 Seat, Valve · 4820-01-478-9160 Valve, Safety Relief →

4820-01-478-9041 — Valves, Nonpowered

Features

Valve,regulating,fluid Pressure — FSC 4820

Identification

NSN: 4820-01-478-9041
NIIN: 014789041
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-478-9041, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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	Valve,regulating,fluid Pressure
FSC / FSG	4820 — Valves, Nonpowered (FSG 48)

Technical Specifications

Parameter	Value
NSN	4820-01-478-9041
Item Name	Valve,regulating,fluid Pressure
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE

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 4

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

4820-01-478-9172198240-0001 POSSIBLE MATCH

DISK,VALVE

Possible match (shared part number)Marotta Controls Inc

4820-01-478-9242186724-0001 POSSIBLE MATCH

VALVE,REGULATING,FLUID PRESSURE

Possible match (shared part number)Marotta Controls Inc

5315-01-479-0776194799-0514 POSSIBLE MATCH

PIN,STRAIGHT,HEADLESS

Possible match (shared part number)Marotta Controls Inc

4820-01-545-4062 POSSIBLE MATCH

VALVE,REGULATING,SYSTEM PRESSURE

Possible match (shared part number)

Cross-Reference Index

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

Reference documents

Reference	Meaning
186721-0001	3/2 Design control — primary reference U.S. Government activity
284593-0001 ITEM 18	5/2 Secondary reference U.S. Government activity
284593-0001	D/9 Drawing number reference only U.S. Government activity

Related Parts

4820-01-478-9172POSSIBLE MATCH

DISK,VALVE

198240-0001

4820-01-478-9242POSSIBLE MATCH

VALVE,REGULATING,FLUID PRESSURE

186724-0001

5315-01-479-0776POSSIBLE MATCH

PIN,STRAIGHT,HEADLESS

194799-0514

4820-01-545-4062POSSIBLE MATCH

VALVE,REGULATING,SYSTEM PRESSURE

Frequently Asked Questions

What is NSN 4820-01-478-9041?

NSN 4820-01-478-9041 is a Valve,regulating,fluid Pressure, classified under FSC 4820, Valves, Nonpowered. Status: active.

What NSN replaces 4820-01-478-9041?

4 possible matches (shared part number, not a government interchangeability claim): 4820-01-478-9172, 4820-01-478-9242, 5315-01-479-0776. Verify interchangeability with system specifications before substitution.

Is NSN 4820-01-478-9041 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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