The Seat,valve, cataloged under National Stock Number 4820-00-028-3854, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Ingersoll-Rand Company Dba Rotary Compressor Division. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-028-3854 |
| Primary Part Number | 12K5NA |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Ingersoll-Rand Company Dba Rotary Compressor Division |
| Status | ACTIVE |
| Seating Surface Shape | FLAT |
| 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 |
|---|---|
| 12K5NA PRIMARY | Ingersoll-Rand Company Dba Rotary Compressor Division (USA) |
| Reference | Meaning |
|---|---|
| 12K5NA | 5/9 Secondary reference Air Products & Chemicals, Inc |
| 12K5NA | 5/9 Secondary reference U.S. Government activity |
| 12K5NA | 5/9 Secondary reference Ingersoll Rand Co |
| 30979EPC57 | 5/9 Secondary reference Ingersoll Rand Co |
| 30979EPC57 | 5/9 Secondary reference Air Products & Chemicals, Inc |
NSN 4820-00-028-3854 is a Seat,valve, manufactured by Ingersoll-Rand Company Dba Rotary Compressor Division, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-028-3854 has 1 manufacturer part number on file: 12K5NA (Ingersoll-Rand Company Dba Rotary Compressor Division).
Key specifications for 12K5NA: Seating Surface Shape: FLAT. 1 specification is 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.