NSN 4820-00-035-9540 · NIIN 000359540 · Part number 8097B
Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 04537
Government record, cited
NSN 4820-00-035-9540 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-035-9540. Manufacturer of record part number: 8097B.
Manufacturer of record: Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa
Identification
NSN: 4820-00-035-9540
NIIN: 000359540
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 8097B
Manufacturer: Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa
General Description
The Stem,fluid Valve, cataloged under National Stock Number 4820-00-035-9540, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Catalog Facts
Item Name
Stem,fluid Valve
FSC / FSG
4820 — Valves, Nonpowered (FSG 48)
Manufacturers
Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa (CAGE 04537)
Technical Specifications
Parameter
Value
NSN
4820-00-035-9540
Primary Part Number
8097B
Item Name
Stem,fluid Valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa
Status
ACTIVE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
⇄Related Items1
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4310-01-089-42022208151POSSIBLE MATCH
CYLINDER HEAD,COMPRESSOR
Possible match (shared part number)Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions
Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa (USA)
Related Parts
4310-01-089-4202POSSIBLE MATCH
CYLINDER HEAD,COMPRESSOR
2208151
Frequently Asked Questions
What is NSN 4820-00-035-9540?
NSN 4820-00-035-9540 is a Stem,fluid Valve, manufactured by Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-00-035-9540?
NSN 4820-00-035-9540 has 3 manufacturer part numbers on file: 2522FPC11 (Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa), 2639FPC11 (Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa), 8097B (Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa).
What NSN replaces 4820-00-035-9540?
1 possible match (shared part number, not a government interchangeability claim): 4310-01-089-4202. Verify interchangeability with system specifications before substitution.
Is NSN 4820-00-035-9540 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.