NSN 4820-01-412-8209 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-412-8209. Manufacturer of record part number: 83921-2.
The Valve,butterfly, cataloged under National Stock Number 4820-01-412-8209, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4820-01-412-8209
Primary Part Number
83921-2
Item Name
Valve,butterfly
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator
Status
ACTIVE
Operating Pressure
150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
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 4820-01-412-8209?
NSN 4820-01-412-8209 is a Valve,butterfly, manufactured by Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-412-8209?
NSN 4820-01-412-8209 has 2 manufacturer part numbers on file: 83921-2 (Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator), 83290 ITEM 35 (Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator).
What are the specifications of 83921-2?
Key specifications for 83921-2: Operating Pressure: 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Material: STEEL CORROSION RESISTING BODY. 2 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-412-8209 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.