The Valve,compression Release, cataloged under National Stock Number 4820-01-302-6910, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings). The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-302-6910 |
| Primary Part Number | 86231 |
| Item Name | Valve,compression Release |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) |
| 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 |
|---|---|
| 86231 PRIMARY | Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) (USA) |
| 86231 | Bergen Engines As (NOR) |
| Reference | Meaning |
|---|---|
| L696/27 ITEM-4 | 5/9 Secondary reference Ulstein Bergen A/s |
| 86231 | 5/9 Secondary reference Ulstein Bergen A/s |
| L696/27 ITEM-4 | 5/9 Secondary reference Rolls-Royce Marine A/s Dep. Engines-Bergen |
| 86231 | 5/9 Secondary reference Rolls-Royce Marine A/s Dep. Engines-Bergen |
NSN 4820-01-302-6910 is a Valve,compression Release, manufactured by Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings), classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-302-6910 has 2 manufacturer part numbers on file: 86231 (Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)), 86231 (Bergen Engines As).
2 possible matches (shared part number, not a government interchangeability claim): 6640-01-421-5583, 5120-01-431-2935. Verify interchangeability with system specifications before substitution.
Key specifications for 86231: End Item Identification: BERGEN DIESEL;CYLINDER HEAD ASSY;MODEL KVGB-16. 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.