The Seat,valve, cataloged under National Stock Number 4820-01-629-8331, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is James D Acers Co Inc Div James D. Acers Company Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-629-8331 |
| Primary Part Number | 1603L |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | James D Acers Co Inc Div James D. Acers Company Inc |
| Status | ACTIVE |
| 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 |
|---|---|
| 1603L PRIMARY | James D Acers Co Inc Div James D. Acers Company Inc (USA) |
NSN 4820-01-629-8331 is a Seat,valve, manufactured by James D Acers Co Inc Div James D. Acers Company Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-629-8331 has 1 manufacturer part number on file: 1603L (James D Acers Co Inc Div James D. Acers Company Inc).
Key specifications for 1603L: Special Features: 150/300PSI; Part Name Assigned by Controlling Agency: VELAN STEAM TRAP PART; End Item Identification: N-150/300 VALVE. 0 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.