Disk, Valve4820-00-405-1771

NSN 4820-00-405-1771 · NIIN 004051771 · Part number 4DP1926B4Y1-4IN

The Walworth Company · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 63686

Government record, cited

NSN 4820-00-405-1771 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-405-1771. Manufacturer of record part number: 4DP1926B4Y1-4IN.

Also searched as 4820-00-405-1771 · 4820004051771 · NIIN 004051771 · 00-405-1771 · FSC 4820 Valves, Nonpowered · CAGE 63686 · 4DP1926B4Y1-4IN

Nearby stock numbers ← 4820-00-405-1765 · 4820-00-405-1773 →

4820-00-405-1771 — Valves, Nonpowered

Features

Disk,valve — FSC 4820
Outside Diameter: 0.677 INCHES NOMINAL IN
Supplementary Features: MATERIAL: FIBER
Style Designator: PLAIN
Inside Diameter: 0.250 INCHES NOMINAL IN
1 manufacturer part number on file
Manufacturer of record: The Walworth Company

Identification

NSN: 4820-00-405-1771
NIIN: 004051771
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 4DP1926B4Y1-4IN
Manufacturer: The Walworth Company

General Description

The Disk,valve, cataloged under National Stock Number 4820-00-405-1771, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is The Walworth Company. Government technical data includes 4 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	4820-00-405-1771
Primary Part Number	4DP1926B4Y1-4IN
Item Name	Disk,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	The Walworth Company
Status	ACTIVE
Outside Diameter	0.677 INCHES NOMINAL IN
Supplementary Features	MATERIAL: FIBER
Style Designator	PLAIN
Inside Diameter	0.250 INCHES NOMINAL IN

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
4DP1926B4Y1-4IN PRIMARY	The Walworth 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 4820-00-405-1771?

NSN 4820-00-405-1771 is a Disk,valve, manufactured by The Walworth Company, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-00-405-1771?

NSN 4820-00-405-1771 has 1 manufacturer part number on file: 4DP1926B4Y1-4IN (The Walworth Company).

What are the specifications of 4DP1926B4Y1-4IN?

Key specifications for 4DP1926B4Y1-4IN: Overall Height: 0.215 INCHES NOMINAL IN; Outside Diameter: 0.677 INCHES NOMINAL IN; Supplementary Features: MATERIAL: FIBER; Style Designator: PLAIN. 4 specifications are documented in the U.S. Government catalog.

Is NSN 4820-00-405-1771 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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