Valve, Safety Relief4820-00-013-3378

NSN 4820-00-013-3378 · NIIN 000133378

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-00-013-3378 · 4820000133378 · NIIN 000133378 · 00-013-3378 · FSC 4820 Valves, Nonpowered

Nearby stock numbers ← 4820-00-013-2907 · 4820-00-013-3514 Valve, Lift-Check →

4820-00-013-3378 — Valves, Nonpowered

Features

Valve,safety Relief — FSC 4820
Flow Control Device: POPPET
Flange Shape: RECTANGULAR WITH HOLES FIRST END
Flange Face Design: PLAIN FIRST END
Nominal Length: 2.500 INCHES FIRST END IN
Style Designator: STRAIGHT THRU
Center to Center Nominal Distance Between Bolt Holes Along Width: 0.960 INCHES FIRST END IN
Disk Loading Method: SPRING

Identification

NSN: 4820-00-013-3378
NIIN: 000133378
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-00-013-3378, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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	4820-00-013-3378
Item Name	Valve,safety Relief
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE
Flow Control Device	POPPET
Flange Shape	RECTANGULAR WITH HOLES FIRST END
Flange Face Design	PLAIN FIRST END
Nominal Length	2.500 INCHES FIRST END IN
Style Designator	STRAIGHT THRU
Center to Center Nominal Distance Between Bolt Holes Along Width	0.960 INCHES FIRST END IN
Disk Loading Method	SPRING
Bolt Hole Quantity	2 FIRST END
Nominal Width	1.300 INCHES FIRST END IN
Material	STEEL CORROSION RESISTING BODY
Material	STEEL COMP 440C FLOW CONTROL DEVICE
Opening Pressure Setting	9.5 POUNDS PER SQUARE INCH LBS
Valve Operation Method	AUTOMATIC
Nominal Thickness	0.125 INCHES FIRST END IN

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
4001T94G05	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 4820-00-013-3378?

NSN 4820-00-013-3378 is a Valve,safety Relief, classified under FSC 4820, Valves, Nonpowered. Status: active.

What are the specifications of 4820-00-013-3378?

Key specifications for 4820-00-013-3378: Flow Control Device: POPPET; Flange Shape: RECTANGULAR WITH HOLES FIRST END; Flange Face Design: PLAIN FIRST END; Nominal Length: 2.500 INCHES FIRST END IN. 14 specifications are documented in the U.S. Government catalog.

Is NSN 4820-00-013-3378 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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