Valve, Safety Relief4820-01-256-0189

NSN 4820-01-256-0189 · NIIN 012560189 · Part number VAL-2080

Atlas Copco Holyoke Inc · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 59379

Government record, cited

NSN 4820-01-256-0189 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-256-0189. Manufacturer of record part number: VAL-2080.

Also searched as 4820-01-256-0189 · 4820012560189 · NIIN 012560189 · 01-256-0189 · FSC 4820 Valves, Nonpowered · CAGE 59379 · VAL-2080

Nearby stock numbers ← 4820-01-256-0188 Valve, Check · 4820-01-256-0190 Cock, Drain →

4820-01-256-0189 — Valves, Nonpowered

Features

Valve,safety Relief — FSC 4820
Material: COPPER ALLOY BODY
Opening Pressure Setting: 150.0 POUNDS PER SQUARE INCH LBS
1 manufacturer part number on file
Manufacturer of record: Atlas Copco Holyoke Inc

Identification

NSN: 4820-01-256-0189
NIIN: 012560189
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: VAL-2080
Manufacturer: Atlas Copco Holyoke Inc

General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-01-256-0189, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Atlas Copco Holyoke Inc. Government technical data includes 2 specifications, 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	4820-01-256-0189
Primary Part Number	VAL-2080
Item Name	Valve,safety Relief
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Atlas Copco Holyoke Inc
Status	ACTIVE
Material	COPPER ALLOY BODY
Opening Pressure Setting	150.0 POUNDS PER SQUARE INCH LBS

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
VAL-2080 PRIMARY	Atlas Copco Holyoke 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 4820-01-256-0189?

NSN 4820-01-256-0189 is a Valve,safety Relief, manufactured by Atlas Copco Holyoke Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-256-0189?

NSN 4820-01-256-0189 has 1 manufacturer part number on file: VAL-2080 (Atlas Copco Holyoke Inc).

What are the specifications of VAL-2080?

Key specifications for VAL-2080: Special Features: VALVE SIZE 1.50 IN. IN; Material: COPPER ALLOY BODY; Opening Pressure Setting: 150.0 POUNDS PER SQUARE INCH LBS. 2 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-256-0189 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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