Float, Valve4820-01-389-3846

NSN 4820-01-389-3846 · NIIN 013893846 · Part number 277A-11-6

Isometrics Inc · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 55242

Government record, cited

NSN 4820-01-389-3846 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-389-3846. Manufacturer of record part number: 277A-11-6.

Also searched as 4820-01-389-3846 · 4820013893846 · NIIN 013893846 · 01-389-3846 · FSC 4820 Valves, Nonpowered · CAGE 55242 · 277A-11-6 · 9775K29

Nearby stock numbers ← 4820-01-389-3840 Disk, Valve · 4820-01-389-4147 Valve, Rotary, Selector →

4820-01-389-3846 — Valves, Nonpowered

Features

Float,valve — FSC 4820
Overall Diameter: 1.500 INCHES NOMINAL IN
Connection Type: UNTHREADED
Quantity: 1
Shape: CYLINDRICAL
System for Which Designed: CLOSED
Material: PLASTIC
2 manufacturer part numbers on file

Identification

NSN: 4820-01-389-3846
NIIN: 013893846
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 277A-11-6
Manufacturer: Isometrics Inc

General Description

The Float,valve, cataloged under National Stock Number 4820-01-389-3846, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Isometrics Inc. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-389-3846
Primary Part Number	277A-11-6
Item Name	Float,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Isometrics Inc
Status	ACTIVE
Overall Diameter	1.500 INCHES NOMINAL IN
Connection Type	UNTHREADED
Quantity	1
Shape	CYLINDRICAL
System for Which Designed	CLOSED
Material	PLASTIC

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
277A-11-6 PRIMARY	Isometrics Inc (USA)
9775K29	Isometrics Inc (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 4820-01-389-3846?

NSN 4820-01-389-3846 is a Float,valve, manufactured by Isometrics Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-389-3846?

NSN 4820-01-389-3846 has 2 manufacturer part numbers on file: 277A-11-6 (Isometrics Inc), 9775K29 (Isometrics Inc).

What are the specifications of 277A-11-6?

Key specifications for 277A-11-6: Overall Diameter: 1.500 INCHES NOMINAL IN; Connection Type: UNTHREADED; Quantity: 1; Shape: CYLINDRICAL. 6 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-389-3846 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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