Valve, Safety Relief4820-01-331-9337

NSN 4820-01-331-9337 · NIIN 013319337 · Part number 11-AV-5/64

Armstrong International Inc Dba Armstrong Machine Works · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 03933

Government record, cited

NSN 4820-01-331-9337 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-331-9337. Manufacturer of record part number: 11-AV-5/64.

Also searched as 4820-01-331-9337 · 4820013319337 · NIIN 013319337 · 01-331-9337 · FSC 4820 Valves, Nonpowered · CAGE 03933 · 11-AV-5/64

Nearby stock numbers ← 4820-01-331-9336 Valve, Check · 4820-01-331-9518 Valve, Regulating, Fluid Pressure →

4820-01-331-9337 — Valves, Nonpowered

Features

Valve,safety Relief — FSC 4820
1 manufacturer part number on file
Manufacturer of record: Armstrong International Inc Dba Armstrong Machine Works

Identification

NSN: 4820-01-331-9337
NIIN: 013319337
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 11-AV-5/64
Manufacturer: Armstrong International Inc Dba Armstrong Machine Works

General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-01-331-9337, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Armstrong International Inc Dba Armstrong Machine Works. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Catalog Facts

Item Name	Valve,safety Relief
FSC / FSG	4820 — Valves, Nonpowered (FSG 48)
Manufacturers	Armstrong International Inc Dba Armstrong Machine Works (CAGE 03933)

Technical Specifications

Parameter	Value
NSN	4820-01-331-9337
Primary Part Number	11-AV-5/64
Item Name	Valve,safety Relief
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Armstrong International Inc Dba Armstrong Machine Works
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
11-AV-5/64 PRIMARY	Armstrong International Inc Dba Armstrong Machine Works (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 4820-01-331-9337?

NSN 4820-01-331-9337 is a Valve,safety Relief, manufactured by Armstrong International Inc Dba Armstrong Machine Works, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-331-9337?

NSN 4820-01-331-9337 has 1 manufacturer part number on file: 11-AV-5/64 (Armstrong International Inc Dba Armstrong Machine Works).

Is NSN 4820-01-331-9337 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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