NSN 4240-01-642-3583 · NIIN 016423583 · Part number VFA-22-SSV
Dwyer Instruments Inc · FSC 4240 — Safety and Rescue Equipment · FSG 42 — Fire Fighting, Rescue, and Safety Equipment · CAGE 6V896
Government record, cited
NSN 4240-01-642-3583 — this item is cataloged by the U.S. Government under National Stock Number 4240-01-642-3583. Manufacturer of record part number: VFA-22-SSV.
Also searched as4240-01-642-3583 ·
4240016423583 ·
NIIN 016423583 ·
01-642-3583 ·
FSC 4240 Safety and Rescue Equipment · CAGE 6V896 · VFA-22-SSV
FSG: 42 — Fire Fighting, Rescue, and Safety Equipment
Primary part number: VFA-22-SSV
Manufacturer: Dwyer Instruments Inc
General Description
The Flow Meter,respirator, cataloged under National Stock Number 4240-01-642-3583, is classified within Federal Supply Class 4240 (Safety and Rescue Equipment) of the Fire Fighting, Rescue, and Safety Equipment group. The manufacturer of record is Dwyer Instruments Inc. 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
4240-01-642-3583
Primary Part Number
VFA-22-SSV
Item Name
Flow Meter,respirator
FSC / FSG
4240 / 42 — Safety and Rescue Equipment
Manufacturer
Dwyer Instruments Inc
Status
ACTIVE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
Possible hazard — SDS may be required (DLA HMIC P)
Other items in FSC 4240 — Safety and Rescue Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4240-00-001-1515
4240-00-001-1515 · Item name not on file
4240-00-001-2684
4240-00-001-2684 · Item name not on file
4240-00-006-0022
HOSE,EVACUATION
4240-00-007-4576
4240-00-007-4576 · Item name not on file
4240-00-007-8182
4240-00-007-8182 · Item name not on file
4240-00-007-8183
4240-00-007-8183 · Item name not on file
4240-00-007-8184
4240-00-007-8184 · Item name not on file
4240-00-007-8185
4240-00-007-8185 · Item name not on file
Frequently Asked Questions
What is NSN 4240-01-642-3583?
NSN 4240-01-642-3583 is a Flow Meter,respirator, manufactured by Dwyer Instruments Inc, classified under FSC 4240, Safety and Rescue Equipment. Status: active.
What part numbers are listed for NSN 4240-01-642-3583?
NSN 4240-01-642-3583 has 1 manufacturer part number on file: VFA-22-SSV (Dwyer Instruments Inc).
What are the specifications of VFA-22-SSV?
Key specifications for VFA-22-SSV: Overall Length: 4.0 INCHES NOMINAL IN; Overall Width: 1.25 INCHES NOMINAL IN; Special Features: MTL. ACRYLIC, BUNA-N, BRASS, BLACK GLASS, ALUMINUM, K MONEL, RANGE-22 O N 22 IN SCALE, LPM AIR-0.15-1 IN; Part Name Assigned by Controlling Agency: WATER OR AIR FLOW CONTROL. 0 specifications are documented in the U.S. Government catalog.
Is NSN 4240-01-642-3583 hazardous material?
Possible hazard — SDS may be required (DLA HMIC P). 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.