The Ball,check, cataloged under National Stock Number 4820-01-485-9823, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-485-9823 |
| Primary Part Number | MHC337 |
| Item Name | Ball,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am |
| Status | ACTIVE |
| Valve Size for Which Designed | 0.750 INCHES IN |
| Valve Design Control Activity | 0VP52 |
| Material | STEEL CORROSION RESISTING |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| MCM070 PC 3 | Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am (USA) |
| MHC337 PRIMARY | Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am (USA) |
| SS-63TMS8-JL | Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am (USA) |
| Reference | Meaning |
|---|---|
| MCM070 | D/9 Drawing number reference only Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am |
NSN 4820-01-485-9823 is a Ball,check, manufactured by Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-485-9823 has 3 manufacturer part numbers on file: MCM070 PC 3 (Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am), MHC337 (Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am), SS-63TMS8-JL (Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am).
1 possible match (shared part number, not a government interchangeability claim): 2995-01-487-1964. Verify interchangeability with system specifications before substitution.
Key specifications for MHC337: Valve Size for Which Designed: 0.750 INCHES IN; Special Features: E/I:DSL.ENGINE; Valve Design Control Activity: 0VP52; Material: STEEL CORROSION RESISTING. 3 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
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.