Head and Disk, Safety, Pressure Re4820-01-659-4566

NSN 4820-01-659-4566 · NIIN 016594566 · Part number BH-0-0194-076

Bs&b Safety Systems Llc · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 32874

Government record, cited

NSN 4820-01-659-4566 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-659-4566. Manufacturer of record part number: BH-0-0194-076.

Also searched as 4820-01-659-4566 · 4820016594566 · NIIN 016594566 · 01-659-4566 · FSC 4820 Valves, Nonpowered · CAGE 32874 · BH-0-0194-076 · 50C-0115-0088

Nearby stock numbers ← 4820-01-659-4490 Valve, Gate · 4820-01-659-4647 Valve, Ball →

4820-01-659-4566 — Valves, Nonpowered

Features

Head and Disk,safety,pressure Re — FSC 4820
2 manufacturer part numbers on file
Manufacturer of record: Bs&b Safety Systems Llc

Identification

NSN: 4820-01-659-4566
NIIN: 016594566
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: BH-0-0194-076
Manufacturer: Bs&b Safety Systems Llc

General Description

The Head and Disk,safety,pressure Re, cataloged under National Stock Number 4820-01-659-4566, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Bs&b Safety Systems Llc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Catalog Facts

Item Name	Head and Disk,safety,pressure Re
FSC / FSG	4820 — Valves, Nonpowered (FSG 48)
Manufacturers	Essex Industries, Inc. Dba Essex Industries (CAGE 19062); Bs&b Safety Systems Llc (CAGE 32874)

Technical Specifications

Parameter	Value
NSN	4820-01-659-4566
Primary Part Number	BH-0-0194-076
Item Name	Head and Disk,safety,pressure Re
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Bs&b Safety Systems Llc
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

Cross-Reference Index

Part Number	Manufacturer
50C-0115-0088	Essex Industries, Inc. Dba Essex Industries (USA)
BH-0-0194-076 PRIMARY	Bs&b Safety Systems Llc (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 4820-01-659-4566?

NSN 4820-01-659-4566 is a Head and Disk,safety,pressure Re, manufactured by Bs&b Safety Systems Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-659-4566?

NSN 4820-01-659-4566 has 2 manufacturer part numbers on file: 50C-0115-0088 (Essex Industries, Inc. Dba Essex Industries), BH-0-0194-076 (Bs&b Safety Systems Llc).

Is NSN 4820-01-659-4566 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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