Valve, Safety Relief4820-01-534-8838

NSN 4820-01-534-8838 · NIIN 015348838 · Part number U000003992

Defense Maritime Solutions, Inc. · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 0EYA6

Government record, cited

NSN 4820-01-534-8838 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-534-8838. Manufacturer of record part number: U000003992.

Also searched as 4820-01-534-8838 · 4820015348838 · NIIN 015348838 · 01-534-8838 · FSC 4820 Valves, Nonpowered · CAGE 0EYA6 · U000003992

Nearby stock numbers ← 4820-01-534-8837 Valve, Check · 4820-01-534-8883 Cap, Valve →

4820-01-534-8838 — Valves, Nonpowered

Features

Valve,safety Relief — FSC 4820
Valve Operation Method: AUTOMATIC
1 manufacturer part number on file
Manufacturer of record: Defense Maritime Solutions, Inc.

Identification

NSN: 4820-01-534-8838
NIIN: 015348838
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: U000003992
Manufacturer: Defense Maritime Solutions, Inc.

General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-01-534-8838, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Defense Maritime Solutions, Inc.. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-534-8838
Primary Part Number	U000003992
Item Name	Valve,safety Relief
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Defense Maritime Solutions, Inc.
Status	ACTIVE
Valve Operation Method	AUTOMATIC

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

Part Number	Manufacturer
U000003992 PRIMARY	Defense Maritime Solutions, Inc. (USA)

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 4820-01-534-8838?

NSN 4820-01-534-8838 is a Valve,safety Relief, manufactured by Defense Maritime Solutions, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-534-8838?

NSN 4820-01-534-8838 has 1 manufacturer part number on file: U000003992 (Defense Maritime Solutions, Inc.).

What are the specifications of U000003992?

Key specifications for U000003992: End Item Identification: INLS WATERJET; Valve Operation Method: AUTOMATIC. 1 specification is documented in the U.S. Government catalog.

Is NSN 4820-01-534-8838 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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