PartsTable TECHNICAL DATA SHEET

NSN 4820-01-314-8154Government record, cited

Valve, Check4820-01-314-8154

NSN 4820-01-314-8154 · NIIN 013148154 · Part number LF909M1-QT-FS-1-1/4

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

Government record, cited

NSN 4820-01-314-8154 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-314-8154. Manufacturer of record part number: LF909M1-QT-FS-1-1/4.

Also searched as 4820-01-314-8154 · 4820013148154 · NIIN 013148154 · 01-314-8154 · FSC 4820 Valves, Nonpowered · CAGE 79227 · LF909M1-QT-FS-1-1/4 · 909LF-32MM · LF909QT-1-1/4

Nearby stock numbers ← 4820-01-314-8052 Valve Assembly, Manifold · 4820-01-314-8155 Valve, Check →

4820-01-314-8154 — Valves, Nonpowered

Features

Valve,check — FSC 4820
Specification/standard Data: 79227-909LF MANUFACTURERS STANDARD
1 manufacturer part number on file
Manufacturer of record: Watts Regulator Company

Identification

NSN: 4820-01-314-8154
NIIN: 013148154
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: LF909M1-QT-FS-1-1/4
Manufacturer: Watts Regulator Company

General Description

The Valve,check, cataloged under National Stock Number 4820-01-314-8154, 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 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-314-8154
Primary Part Number	LF909M1-QT-FS-1-1/4
Item Name	Valve,check
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Watts Regulator Company
Status	ACTIVE
Specification/standard Data	79227-909LF MANUFACTURERS STANDARD

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
LF909M1-QT-FS-1-1/4 PRIMARY	Watts Regulator Company (USA)

Reference documents

Reference	Meaning
909LF-32MM	5/9 Secondary reference Watts Regulator Company
LF909QT-1-1/4	5/9 Secondary reference Watts Regulator Company

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 4820-01-314-8154?

NSN 4820-01-314-8154 is a Valve,check, manufactured by Watts Regulator Company, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-314-8154?

NSN 4820-01-314-8154 has 1 manufacturer part number on file: LF909M1-QT-FS-1-1/4 (Watts Regulator Company).

What are the specifications of LF909M1-QT-FS-1-1/4?

Key specifications for LF909M1-QT-FS-1-1/4: Specification/standard Data: 79227-909LF MANUFACTURERS STANDARD; Special Features: BACK FLOW FLOOD SENSOR (FS) INCLUDED. 1 specification is documented in the U.S. Government catalog.

Is NSN 4820-01-314-8154 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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