Valve, Safety Relief4820-00-009-3399

NSN 4820-00-009-3399 · NIIN 000093399 · Part number VS4020-010

Robertshaw Controls Co Uni-Line Div · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 33371

Government record, cited

NSN 4820-00-009-3399 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-009-3399. Manufacturer of record part number: VS4020-010.

Also searched as 4820-00-009-3399 · 4820000093399 · NIIN 000093399 · 00-009-3399 · FSC 4820 Valves, Nonpowered · CAGE 33371 · VS4020-010

Nearby stock numbers ← 4820-00-009-2606 Valve, Expansion · 4820-00-009-3486 Valve, Bleeder, Hydraulic System →

4820-00-009-3399 — Valves, Nonpowered

Features

Valve,safety Relief — FSC 4820
Nominal Thread Size: 0.500 INCHES ALL ENDS IN
Thread Series Designator: NPT ALL ENDS
1 manufacturer part number on file
Manufacturer of record: Robertshaw Controls Co Uni-Line Div

Identification

NSN: 4820-00-009-3399
NIIN: 000093399
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: VS4020-010
Manufacturer: Robertshaw Controls Co Uni-Line Div

General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-00-009-3399, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Robertshaw Controls Co Uni-Line Div. 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	4820-00-009-3399
Primary Part Number	VS4020-010
Item Name	Valve,safety Relief
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Robertshaw Controls Co Uni-Line Div
Status	ACTIVE
Nominal Thread Size	0.500 INCHES ALL ENDS IN
Thread Series Designator	NPT ALL ENDS

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
VS4020-010 PRIMARY	Robertshaw Controls Co Uni-Line Div (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 4820-00-009-3399?

NSN 4820-00-009-3399 is a Valve,safety Relief, manufactured by Robertshaw Controls Co Uni-Line Div, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-00-009-3399?

NSN 4820-00-009-3399 has 1 manufacturer part number on file: VS4020-010 (Robertshaw Controls Co Uni-Line Div).

What are the specifications of VS4020-010?

Key specifications for VS4020-010: Nominal Thread Size: 0.500 INCHES ALL ENDS IN; Thread Series Designator: NPT ALL ENDS. 2 specifications are documented in the U.S. Government catalog.

Is NSN 4820-00-009-3399 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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