PartsTable TECHNICAL DATA SHEET

NSN 4820-01-346-4655Government record, cited

Valve, Diaphragm, Stop4820-01-346-4655

NSN 4820-01-346-4655 · NIIN 013464655 · Part number K521X200-1400/521100

Aquamatic Inc · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 04816

Government record, cited

NSN 4820-01-346-4655 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-346-4655. Manufacturer of record part number: K521X200-1400/521100.

Also searched as 4820-01-346-4655 · 4820013464655 · NIIN 013464655 · 01-346-4655 · FSC 4820 Valves, Nonpowered · CAGE 04816 · K521X200-1400/521100 · K521X200-14000/K521109 · 521DV

Nearby stock numbers ← 4820-01-346-4653 Valve, Safety Relief · 4820-01-346-4656 →

4820-01-346-4655 — Valves, Nonpowered

Features

Valve,diaphragm,stop — FSC 4820
1 manufacturer part number on file
Manufacturer of record: Aquamatic Inc

Identification

NSN: 4820-01-346-4655
NIIN: 013464655
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: K521X200-1400/521100
Manufacturer: Aquamatic Inc

General Description

The Valve,diaphragm,stop, cataloged under National Stock Number 4820-01-346-4655, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Aquamatic Inc. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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	4820-01-346-4655
Primary Part Number	K521X200-1400/521100
Item Name	Valve,diaphragm,stop
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Aquamatic Inc
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
K521X200-1400/521100 PRIMARY	Aquamatic Inc (USA)

Reference documents

Reference	Meaning
K521X200-14000/K521109	5/9 Secondary reference Aquamatic Inc
521DV	5/9 Secondary reference Aquamatic Inc

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 4820-01-346-4655?

NSN 4820-01-346-4655 is a Valve,diaphragm,stop, manufactured by Aquamatic Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-346-4655?

NSN 4820-01-346-4655 has 1 manufacturer part number on file: K521X200-1400/521100 (Aquamatic Inc).

What are the specifications of K521X200-1400/521100?

Key specifications for K521X200-1400/521100: End Item Identification: 4610-01-219-8707. 0 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-346-4655 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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