Valve, Regulating, Fluid Pressure4820-01-327-4978

NSN 4820-01-327-4978 · NIIN 013274978

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-327-4978 · 4820013274978 · NIIN 013274978 · 01-327-4978 · FSC 4820 Valves, Nonpowered

Nearby stock numbers ← 4820-01-327-4977 Valve, Regulating, Fluid Pressure · 4820-01-327-4990 Cap, Valve →

4820-01-327-4978 — Valves, Nonpowered

Features

Valve,regulating,fluid Pressure — FSC 4820
Flow Control Device: POPPET
Second End Relationship with First End: IDENTICAL
Body Style: STRAIGHT THRU W/OFFSET
First End Style Designator: EXTERNAL SEAT FOR GASKET SEAL
End Connection Quantity: 2
Valve Loading Method: SPRING
First End Connection Type: THREADED EXTERNAL TUBE

Identification

NSN: 4820-01-327-4978
NIIN: 013274978
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-327-4978, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-327-4978
Item Name	Valve,regulating,fluid Pressure
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE
Flow Control Device	POPPET
Second End Relationship with First End	IDENTICAL
Body Style	STRAIGHT THRU W/OFFSET
First End Style Designator	EXTERNAL SEAT FOR GASKET SEAL
End Connection Quantity	2
Valve Loading Method	SPRING
First End Connection Type	THREADED EXTERNAL TUBE
First End Outside Diameter Tube Accommodated	0.500 INCHES NOMINAL IN
Material	COPPER ALLOY BODY

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

Cross-Reference Index

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

Reference documents

Reference	Meaning
280048-283	3/2 Design control — primary reference U.S. Government activity

No interchangeability data on file.

Other items in FSC 4820 — Valves, Nonpowered

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

4820-00-000-0097

4820-00-000-0097 · Item name not on file

4820-00-001-0010

VALVE,ROTARY,SELECTOR

4820-00-001-0020

4820-00-001-0020 · Item name not on file

4820-00-001-0021

4820-00-001-0021 · Item name not on file

4820-00-001-0032

4820-00-001-0032 · Item name not on file

4820-00-001-0037

VALVE,SAFETY RELIEF

4820-00-001-0042

4820-00-001-0042 · Item name not on file

4820-00-001-1230

4820-00-001-1230 · Item name not on file

Frequently Asked Questions

What is NSN 4820-01-327-4978?

NSN 4820-01-327-4978 is a Valve,regulating,fluid Pressure, classified under FSC 4820, Valves, Nonpowered. Status: active.

What are the specifications of 4820-01-327-4978?

Key specifications for 4820-01-327-4978: Flow Control Device: POPPET; Second End Relationship with First End: IDENTICAL; Body Style: STRAIGHT THRU W/OFFSET; First End Style Designator: EXTERNAL SEAT FOR GASKET SEAL. 9 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-327-4978 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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