The Disk,valve, cataloged under National Stock Number 4810-01-456-0165, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 4 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4810-01-456-0165 |
| Primary Part Number | 253873 ASSY 99 PIECE 4 |
| Item Name | Disk,valve |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Pressure Rating | 250.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Style Designator | SOLID WEDGE |
| Media for Which Designed | HYDRAULIC FLUID |
| Material | COPPER ALLOY |
| 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 |
|---|---|
| 253873 ASSY 99 PIECE 4 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 253873 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4810-01-456-0165 is a Disk,valve, manufactured by Naval Sea Systems Command, classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-01-456-0165 has 1 manufacturer part number on file: 253873 ASSY 99 PIECE 4 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 4810-01-466-1922. Verify interchangeability with system specifications before substitution.
Key specifications for 253873 ASSY 99 PIECE 4: Pressure Rating: 250.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Style Designator: SOLID WEDGE; Special Features: FOR GATE VALVE SZ 6 IN.; MOTOR OPERATED IN; Media for Which Designed: HYDRAULIC FLUID. 4 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.