Valve, Check4820-01-654-6404

NSN 4820-01-654-6404 · NIIN 016546404 · Part number 1503-0019-81

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

Government record, cited

NSN 4820-01-654-6404 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-654-6404. Manufacturer of record part number: 1503-0019-81.

Also searched as 4820-01-654-6404 · 4820016546404 · NIIN 016546404 · 01-654-6404 · FSC 4820 Valves, Nonpowered · CAGE 59379 · 1503-0019-81

Nearby stock numbers ← 4820-01-654-6399 Valve, Ball · 4820-01-654-6418 Valve, Check →

4820-01-654-6404 — Valves, Nonpowered

Features

Valve,check — FSC 4820
Thread Direction: RIGHT-HAND ALL ENDS
Valve Operation Method: MANUAL
1 manufacturer part number on file
Manufacturer of record: Atlas Copco Holyoke Inc

Identification

NSN: 4820-01-654-6404
NIIN: 016546404
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 1503-0019-81
Manufacturer: Atlas Copco Holyoke Inc

General Description

The Valve,check, cataloged under National Stock Number 4820-01-654-6404, 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	4820-01-654-6404
Primary Part Number	1503-0019-81
Item Name	Valve,check
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Atlas Copco Holyoke Inc
Status	ACTIVE
Thread Direction	RIGHT-HAND ALL ENDS
Valve Operation Method	MANUAL

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
1503-0019-81 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 4820-01-654-6404?

NSN 4820-01-654-6404 is a Valve,check, manufactured by Atlas Copco Holyoke Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-654-6404?

NSN 4820-01-654-6404 has 1 manufacturer part number on file: 1503-0019-81 (Atlas Copco Holyoke Inc).

What are the specifications of 1503-0019-81?

Key specifications for 1503-0019-81: Thread Direction: RIGHT-HAND ALL ENDS; Special Features: STATIONARY COMPRESSORS; Valve Operation Method: MANUAL. 2 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-654-6404 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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