The Repair Kit,rubber, cataloged under National Stock Number 4820-01-440-3257, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Aalberts Integrated Piping Systems Americas, Inc.. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 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 | 4820-01-440-3257 |
| Primary Part Number | 40-004-04 |
| Item Name | Repair Kit,rubber |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Aalberts Integrated Piping Systems Americas, Inc. |
| 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 |
|---|---|
| 40-004-04 PRIMARY | Aalberts Integrated Piping Systems Americas, Inc. (USA) |
NSN 4820-01-440-3257 is a Repair Kit,rubber, manufactured by Aalberts Integrated Piping Systems Americas, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-440-3257 has 1 manufacturer part number on file: 40-004-04 (Aalberts Integrated Piping Systems Americas, Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 6115-01-581-3248, 5310-01-609-3961. Verify interchangeability with system specifications before substitution.
Key specifications for 40-004-04: Special Features: END ITEM IS BACKFLOW PREVENTER, MODEL 40-205-A2;KIT INCLUDES D-2505 R.V. DIAPHRAGM 1; D-2504 R.V. SEAT DISC 1; D-2503 CHECK SEAT DISC 2; D-2502 STEM O-RING 1; D-2501 BUSHING O-RING 1; D-2500 CHECK CAP O-RING 2; End Item Identification: MARS CLASS AFS. 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.