The Disk,valve, cataloged under National Stock Number 4820-01-502-6563, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-502-6563 |
| Primary Part Number | B14535.004.000 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Pressure Rating | 400.00 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Temp Rating | 150.0 FAHRENHEIT MAXIMUM DEGF |
| Material | STEEL CORROSION RESISTING |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY: PART REQUIRES SPECIAL MATERIAL CONTROL AND QUALITYASSURANCE, WHICH SUPPORT THE NON-MAGNETIC SIGNATURE OF MINESWEEPERS. |
| 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 |
|---|---|
| B14535.004.000 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| MH105 | D/9 Drawing number reference only Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| B14535.004.000 | 3/1 Design control — primary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| MH105 FIND NO.5 | 5/1 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
NSN 4820-01-502-6563 is a Disk,valve, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-502-6563 has 1 manufacturer part number on file: B14535.004.000 (Naval Inventory Control Point Mechanicsburg).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-502-6572, 4820-01-502-6865. Verify interchangeability with system specifications before substitution.
Key specifications for B14535.004.000: Pressure Rating: 400.00 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS; Temp Rating: 150.0 FAHRENHEIT MAXIMUM DEGF; Special Features: DISK ASSEMBLY INCLUDES, 1 DISK; 1 DISK INSERT; 1 DISK PLATE; 1 DISK NUT; End Item Identification: 1/2 INCH RELIEF VALVE TYP 1771-T IN. 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.