Valve, Damper 4820-01-266-9541 NSN 4820-01-266-9541 · NIIN 012669541 · Part number 3"C37S304
Simco Supply Co Inc · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 3Y676
NSN 4820-01-266-9541 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-266-9541. Manufacturer of record part number: 3"C37S304 .
Also searched as
4820-01-266-9541 ·
4820012669541 ·
NIIN 012669541 ·
01-266-9541 ·
FSC 4820 Valves, Nonpowered · CAGE 3Y676 · 3"C37S304 · 100-6663 · C37S304
Nearby stock numbers
← 4820-01-266-9540 Stem, Pivot, Steam T
·
4820-01-266-9553 Valve, Check →
4820-01-266-9541 — Valves, Nonpowered
Features
Valve,damper — FSC 4820 2 manufacturer part numbers on file Manufacturer of record: Simco Supply Co Inc
Identification
NSN: 4820-01-266-9541
NIIN: 012669541
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 3"C37S304
Manufacturer: Simco Supply Co Inc
General Description
The Valve,damper, cataloged under National Stock Number 4820-01-266-9541, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Simco Supply Co Inc. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
Catalog Facts
Item Name Valve,damper FSC / FSG 4820 — Valves, Nonpowered (FSG 48) Manufacturers Fabri-Valve Co Div of Itt Corp (CAGE 6Z550); Simco Supply Co Inc (CAGE 3Y676)
Technical Specifications
Parameter Value NSN 4820-01-266-9541 Primary Part Number 3"C37S304 Item Name Valve,damper FSC / FSG 4820 / 48 — Valves, Nonpowered Manufacturer Simco Supply Co 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)
Cross-Reference Index
Part Number Manufacturer
3"C37S304 Fabri-Valve Co Div of Itt Corp (USA)
3"C37S304 PRIMARY Simco Supply Co Inc (USA)
Reference documents
Reference Meaning
100-6663
5/9 Secondary reference Dynatron Inc
C37S304
C/1 Advisory reference — outside the item-of-supply concept Simco Supply Co 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 4820-01-266-9541?
NSN 4820-01-266-9541 is a Valve,damper, manufactured by Simco Supply Co Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-266-9541?
NSN 4820-01-266-9541 has 2 manufacturer part numbers on file: 3"C37S304 (Fabri-Valve Co Div of Itt Corp), 3"C37S304 (Simco Supply Co Inc).
Is NSN 4820-01-266-9541 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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