NSN 4820-01-660-2451 · NIIN 016602451 · Part number 350204
Marine Air Systems Inc · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 01KK1
Government record, cited
NSN 4820-01-660-2451 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-660-2451. Manufacturer of record part number: 350204.
The Valve,expansion, cataloged under National Stock Number 4820-01-660-2451, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Marine Air Systems Inc. The record lists 2 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.
Technical Specifications
Parameter
Value
NSN
4820-01-660-2451
Primary Part Number
350204
Item Name
Valve,expansion
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Marine Air Systems 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)
Criticality Code
X
⇄Related Items1
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
7930-01-691-2974350204POSSIBLE MATCH
MULTI-SURFACE SANITIZER AND CLEA
Possible match (shared part number)Spartan Chemical Company, Inc. Dba Spartan Ohio
NSN 4820-01-660-2451 is a Valve,expansion, manufactured by Marine Air Systems Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-660-2451?
NSN 4820-01-660-2451 has 2 manufacturer part numbers on file: 350204 (Marine Air Systems Inc), 290339319 (Marine Air Systems Inc).
What NSN replaces 4820-01-660-2451?
1 possible match (shared part number, not a government interchangeability claim): 7930-01-691-2974. Verify interchangeability with system specifications before substitution.
What are the specifications of 350204?
Key specifications for 350204: Part Name Assigned by Controlling Agency: EXPANSION VALVE; End Item Identification: MTD96 CHILLER. 0 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-660-2451 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.