Flapper4320-01-602-3185

NSN 4320-01-602-3185 · NIIN 016023185 · Part number 508-02019-621

Velan Valve Corp. · FSC 4320 — Power and Hand Pumps · FSG 43 — Pumps and Compressors · CAGE 57574

Government record, cited

NSN 4320-01-602-3185 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-602-3185. Manufacturer of record part number: 508-02019-621.

Also searched as 4320-01-602-3185 · 4320016023185 · NIIN 016023185 · 01-602-3185 · FSC 4320 Power and Hand Pumps · CAGE 57574 · 508-02019-621 · HMM11-21-001-1XX-03

Nearby stock numbers ← 4320-01-602-3131 Seal Assembly, Shaft, Spring Loade · 4320-01-602-3241 Vane, Pump, Rotary →

Features

Flapper — FSC 4320
2 manufacturer part numbers on file
Manufacturer of record: Velan Valve Corp.

Identification

NSN: 4320-01-602-3185
NIIN: 016023185
FSC: 4320 — Power and Hand Pumps
FSG: 43 — Pumps and Compressors
Primary part number: 508-02019-621
Manufacturer: Velan Valve Corp.

General Description

The Flapper, cataloged under National Stock Number 4320-01-602-3185, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Velan Valve Corp.. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Catalog Facts

Item Name	Flapper
FSC / FSG	4320 — Power and Hand Pumps (FSG 43)
Manufacturers	Velan Valve Corp. (CAGE 57574)

Technical Specifications

Parameter	Value
NSN	4320-01-602-3185
Primary Part Number	508-02019-621
Item Name	Flapper
FSC / FSG	4320 / 43 — Power and Hand Pumps
Manufacturer	Velan Valve Corp.
Status	ACTIVE

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)

Cross-Reference Index

Part Number	Manufacturer
508-02019-621 PRIMARY	Velan Valve Corp. (USA)
HMM11-21-001-1XX-03	Velan Valve Corp. (USA)

No interchangeability data on file.

Other items in FSC 4320 — Power and Hand Pumps

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

4320-00-001-1633

4320-00-001-1633 · Item name not on file

4320-00-001-2628

RETAINER AND PIN

4320-00-001-2629

HOUSING AND PIN

4320-00-001-2630

PUMP,CENTRIFUGAL

4320-00-001-2631

4320-00-001-2631 · Item name not on file

4320-00-001-2632

4320-00-001-2632 · Item name not on file

4320-00-001-3377

4320-00-001-3377 · Item name not on file

4320-00-001-3384

4320-00-001-3384 · Item name not on file

Frequently Asked Questions

What is NSN 4320-01-602-3185?

NSN 4320-01-602-3185 is a Flapper, manufactured by Velan Valve Corp., classified under FSC 4320, Power and Hand Pumps. Status: active.

What part numbers are listed for NSN 4320-01-602-3185?

NSN 4320-01-602-3185 has 2 manufacturer part numbers on file: 508-02019-621 (Velan Valve Corp.), HMM11-21-001-1XX-03 (Velan Valve Corp.).

Is NSN 4320-01-602-3185 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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