PartsTable TECHNICAL DATA SHEET

NSN 4820-01-627-8567Government record, cited

Valve, Pressure Equalizing, Gaseou4820-01-627-8567

NSN 4820-01-627-8567 · NIIN 016278567 · Part number AE1821N

Watson Mcdaniel Co · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 64042

Government record, cited

NSN 4820-01-627-8567 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-627-8567. Manufacturer of record part number: AE1821N.

Also searched as 4820-01-627-8567 · 4820016278567 · NIIN 016278567 · 01-627-8567 · FSC 4820 Valves, Nonpowered · CAGE 64042 · AE1821N · AAE1821 · 5212801

Nearby stock numbers ← 4820-01-627-8418 Disk, Rupturable · 4820-01-627-8716 Valve, Vacuum Regulating →

4820-01-627-8567 — Valves, Nonpowered

Features

Valve,pressure Equalizing,gaseou — FSC 4820
1 manufacturer part number on file
Manufacturer of record: Watson Mcdaniel Co

Identification

NSN: 4820-01-627-8567
NIIN: 016278567
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: AE1821N
Manufacturer: Watson Mcdaniel Co

General Description

The Valve,pressure Equalizing,gaseou, cataloged under National Stock Number 4820-01-627-8567, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Watson Mcdaniel Co. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Catalog Facts

Item Name	Valve,pressure Equalizing,gaseou
FSC / FSG	4820 — Valves, Nonpowered (FSG 48)
Manufacturers	Watson Mcdaniel Co (CAGE 64042)

Technical Specifications

Parameter	Value
NSN	4820-01-627-8567
Primary Part Number	AE1821N
Item Name	Valve,pressure Equalizing,gaseou
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Watson Mcdaniel 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)
Criticality Code	X

Cross-Reference Index

Part Number	Manufacturer
AE1821N PRIMARY	Watson Mcdaniel Co (USA)

Reference documents

Reference	Meaning
AAE1821	5/9 Secondary reference Watson Mcdaniel Co
5212801	D/9 Drawing number reference only W S Darley & Co Div Darley Pump Division

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 4820-01-627-8567?

NSN 4820-01-627-8567 is a Valve,pressure Equalizing,gaseou, manufactured by Watson Mcdaniel Co, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-627-8567?

NSN 4820-01-627-8567 has 1 manufacturer part number on file: AE1821N (Watson Mcdaniel Co).

Is NSN 4820-01-627-8567 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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