Valve, Stop-Lift-Check4820-01-491-1766

NSN 4820-01-491-1766 · NIIN 014911766 · Part number 6666341

Melroe Co · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 9W224

Government record, cited

NSN 4820-01-491-1766 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-491-1766. Manufacturer of record part number: 6666341.

Also searched as 4820-01-491-1766 · 4820014911766 · NIIN 014911766 · 01-491-1766 · FSC 4820 Valves, Nonpowered · CAGE 9W224 · 6666341

Nearby stock numbers ← 4820-01-491-1587 Deck Box Operator, Valve · 4820-01-491-1907 Valve, Cross →

4820-01-491-1766 — Valves, Nonpowered

Features

Valve,stop-Lift-Check — FSC 4820
1 manufacturer part number on file
Manufacturer of record: Melroe Co

Identification

NSN: 4820-01-491-1766
NIIN: 014911766
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 6666341
Manufacturer: Melroe Co

General Description

The Valve,stop-Lift-Check, cataloged under National Stock Number 4820-01-491-1766, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Melroe Co. 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	4820-01-491-1766
Primary Part Number	6666341
Item Name	Valve,stop-Lift-Check
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Melroe Co
Status	ACTIVE

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
6666341 PRIMARY	Melroe Co (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 4820-01-491-1766?

NSN 4820-01-491-1766 is a Valve,stop-Lift-Check, manufactured by Melroe Co, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-491-1766?

NSN 4820-01-491-1766 has 1 manufacturer part number on file: 6666341 (Melroe Co).

What are the specifications of 6666341?

Key specifications for 6666341: Part Name Assigned by Controlling Agency: VALVE; End Item Identification: BOB CAT 753G G. 0 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-491-1766 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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