The Retainer,disk,valve, cataloged under National Stock Number 4820-01-503-2452, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Hamworthy Inc.. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-503-2452 |
| Primary Part Number | 31540040 |
| Item Name | Retainer,disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Hamworthy 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 |
|---|---|
| 31540040 PRIMARY | Hamworthy Inc. (USA) |
| Reference | Meaning |
|---|---|
| 31540040 | C/1 Advisory reference — outside the item-of-supply concept Wartsila Water Systems Limited |
NSN 4820-01-503-2452 is a Retainer,disk,valve, manufactured by Hamworthy Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-503-2452 has 1 manufacturer part number on file: 31540040 (Hamworthy Inc.).
Key specifications for 31540040: End Item Identification: COMPRESSOR, JP5 FUELING. 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.