Valve, Vacuum Breaking4820-01-539-5336

NSN 4820-01-539-5336 · NIIN 015395336 · Part number 8FR

Watts Regulator Company · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 79227

Government record, cited

NSN 4820-01-539-5336 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-539-5336. Manufacturer of record part number: 8FR.

Also searched as 4820-01-539-5336 · 4820015395336 · NIIN 015395336 · 01-539-5336 · FSC 4820 Valves, Nonpowered · CAGE 79227 · 8FR

Nearby stock numbers ← 4820-01-539-5294 Valve, Check · 4820-01-539-5343 Valve, Butterfly →

4820-01-539-5336 — Valves, Nonpowered

Features

Valve,vacuum Breaking — FSC 4820
Temp Rating: 180.0 FAHRENHEIT DEGF
Second End Relationship with First End: NOT IDENTICAL
Body Style: SINGLE CONNECTION, STRAIGHT FLOW
First End Style Designator: PLAIN
End Connection Quantity: 2
Specification/standard Data: 80204 - A1121 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
First End Connection Type: UNTHREADED INTERNAL HOSE

Identification

NSN: 4820-01-539-5336
NIIN: 015395336
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 8FR
Manufacturer: Watts Regulator Company

General Description

The Valve,vacuum Breaking, cataloged under National Stock Number 4820-01-539-5336, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Watts Regulator Company. Government technical data includes 11 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	4820-01-539-5336
Primary Part Number	8FR
Item Name	Valve,vacuum Breaking
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Watts Regulator Company
Status	ACTIVE
Temp Rating	180.0 FAHRENHEIT DEGF
Second End Relationship with First End	NOT IDENTICAL
Body Style	SINGLE CONNECTION, STRAIGHT FLOW
First End Style Designator	PLAIN
End Connection Quantity	2
Specification/standard Data	80204 - A1121 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
First End Connection Type	UNTHREADED INTERNAL HOSE
Material	COPPER ALLOY BODY
Material	RUBBER SEAT
Media for Which Designed	WATER, FRESH
Second End Connection Type	THREADED EXTERNAL HOSE

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
8FR PRIMARY	Watts Regulator Company (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 4820-01-539-5336?

NSN 4820-01-539-5336 is a Valve,vacuum Breaking, manufactured by Watts Regulator Company, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-539-5336?

NSN 4820-01-539-5336 has 1 manufacturer part number on file: 8FR (Watts Regulator Company).

What are the specifications of 8FR?

Key specifications for 8FR: Temp Rating: 180.0 FAHRENHEIT DEGF; Second End Relationship with First End: NOT IDENTICAL; Body Style: SINGLE CONNECTION, STRAIGHT FLOW; First End Style Designator: PLAIN. 11 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-539-5336 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.

PartsTable Design LLC · partstable.com