The Disk,valve, cataloged under National Stock Number 4820-01-440-7074, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Aalberts Integrated Piping Systems Americas, Inc.. Government technical data includes 5 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-440-7074 |
| Primary Part Number | D-2504 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Aalberts Integrated Piping Systems Americas, Inc. |
| Status | ACTIVE |
| Pressure Rating | 175.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Temp Rating | 33.0 FAHRENHEIT MINIMUM AND 180.0 FAHRENHEIT MAXIMUM DEGF |
| Material Document and Classification | ZZ-R-765, CLASS 3, GRADE 50 FED SPEC SINGLE MATERIAL RESPONSE |
| Media for Which Designed | WATER |
| Material | RUBBER SILICONE CLASS Q |
| 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 |
|---|---|
| D-2504 PRIMARY | Aalberts Integrated Piping Systems Americas, Inc. (USA) |
NSN 4820-01-440-7074 is a Disk,valve, manufactured by Aalberts Integrated Piping Systems Americas, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-440-7074 has 1 manufacturer part number on file: D-2504 (Aalberts Integrated Piping Systems Americas, Inc.).
Key specifications for D-2504: Pressure Rating: 175.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS; Temp Rating: 33.0 FAHRENHEIT MINIMUM AND 180.0 FAHRENHEIT MAXIMUM DEGF; Material Document and Classification: ZZ-R-765, CLASS 3, GRADE 50 FED SPEC SINGLE MATERIAL RESPONSE; Media for Which Designed: WATER. 5 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.