PartsTable TECHNICAL DATA SHEET

NSN 4820-01-033-5804Government record, cited

Valve, Check4820-01-033-5804

NSN 4820-01-033-5804 · NIIN 010335804 · Part number S381MR149P001

Raytheon Company Dba Raytheon Co · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 3B150

Government record, cited

NSN 4820-01-033-5804 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-033-5804. Manufacturer of record part number: S381MR149P001.

Also searched as 4820-01-033-5804 · 4820010335804 · NIIN 010335804 · 01-033-5804 · FSC 4820 Valves, Nonpowered · CAGE 3B150 · S381MR149P001

Nearby stock numbers ← 4820-01-033-5476 Valve, Linear, Directional Control · 4820-01-033-5998 Valve, Check →

4820-01-033-5804 — Valves, Nonpowered

Features

Valve,check — FSC 4820
2 manufacturer part numbers on file
Manufacturer of record: Raytheon Company Dba Raytheon Co

Identification

NSN: 4820-01-033-5804
NIIN: 010335804
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: S381MR149P001
Manufacturer: Raytheon Company Dba Raytheon Co

General Description

The Valve,check, cataloged under National Stock Number 4820-01-033-5804, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Raytheon Company Dba Raytheon Co. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Catalog Facts

Item Name	Valve,check
FSC / FSG	4820 — Valves, Nonpowered (FSG 48)
Manufacturers	Raytheon Company (CAGE 54X10); Raytheon Company Dba Raytheon Co (CAGE 3B150)

Technical Specifications

Parameter	Value
NSN	4820-01-033-5804
Primary Part Number	S381MR149P001
Item Name	Valve,check
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Raytheon Company Dba Raytheon Co
Status	ACTIVE

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)

Cross-Reference Index

Part Number	Manufacturer
S381MR149P001	Raytheon Company (USA)
S381MR149P001 PRIMARY	Raytheon Company Dba Raytheon Co (USA)

Reference documents

Reference	Meaning
S381MR149P001	5/9 Secondary reference Raytheon Company Div Corp

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 4820-01-033-5804?

NSN 4820-01-033-5804 is a Valve,check, manufactured by Raytheon Company Dba Raytheon Co, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-033-5804?

NSN 4820-01-033-5804 has 2 manufacturer part numbers on file: S381MR149P001 (Raytheon Company), S381MR149P001 (Raytheon Company Dba Raytheon Co).

Is NSN 4820-01-033-5804 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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