Valve, Seatless4820-01-374-9061

NSN 4820-01-374-9061 · NIIN 013749061 · Part number 2478W420

Allied Defense Industries, Llc Dba Ams Distribution · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 0GD25

Government record, cited

NSN 4820-01-374-9061 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-374-9061. Manufacturer of record part number: 2478W420.

Also searched as 4820-01-374-9061 · 4820013749061 · NIIN 013749061 · 01-374-9061 · FSC 4820 Valves, Nonpowered · CAGE 0GD25 · 2478W420

Nearby stock numbers ← 4820-01-374-9052 Valve, Globe · 4820-01-374-9156 Piston, Valve →

4820-01-374-9061 — Valves, Nonpowered

Features

Valve,seatless — FSC 4820
2 manufacturer part numbers on file
Manufacturer of record: Allied Defense Industries, Llc Dba Ams Distribution

Identification

NSN: 4820-01-374-9061
NIIN: 013749061
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 2478W420
Manufacturer: Allied Defense Industries, Llc Dba Ams Distribution

General Description

The Valve,seatless, cataloged under National Stock Number 4820-01-374-9061, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Allied Defense Industries, Llc Dba Ams Distribution. 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	Valve,seatless
FSC / FSG	4820 — Valves, Nonpowered (FSG 48)
Manufacturers	Honeywell Aerospace Yeovil Div Aerospace -Yeovil (CAGE U1605); Allied Defense Industries, Llc Dba Ams Distribution (CAGE 0GD25)

Technical Specifications

Parameter	Value
NSN	4820-01-374-9061
Primary Part Number	2478W420
Item Name	Valve,seatless
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Allied Defense Industries, Llc Dba Ams Distribution
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
2478W420	Honeywell Aerospace Yeovil Div Aerospace -Yeovil (GBR)
2478W420 PRIMARY	Allied Defense Industries, Llc Dba Ams Distribution (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 4820-01-374-9061?

NSN 4820-01-374-9061 is a Valve,seatless, manufactured by Allied Defense Industries, Llc Dba Ams Distribution, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-374-9061?

NSN 4820-01-374-9061 has 2 manufacturer part numbers on file: 2478W420 (Honeywell Aerospace Yeovil Div Aerospace -Yeovil), 2478W420 (Allied Defense Industries, Llc Dba Ams Distribution).

Is NSN 4820-01-374-9061 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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