The Retainer,disk,valve, cataloged under National Stock Number 4820-01-381-0389, 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 6 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-381-0389 |
| Primary Part Number | SW118-21CP |
| Item Name | Retainer,disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Material Document and Classification | ASTM B61 ASSN STD SINGLE MATERIAL RESPONSE |
| Valve Size for Which Designed | 0.500 INCHES IN |
| Valve Design Control Activity | 34494 |
| Material | COPPER ALLOY |
| Reference Number Differentiating Characteristics | CLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| SW118-21CP | Naval Inventory Control Point Mechanicsburg (USA) |
| SW118 FIND 21CP | Naval Inventory Control Point Mechanicsburg (USA) |
| B14531.001.130CP | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 14531001132 | 3/1 Design control — primary reference Emerson Automation Solutions Final Control Us Lp Div Navy Product Team |
| B14531.001.130 | 5/9 Secondary reference Emerson Automation Solutions Final Control Us Lp Div Navy Product Team |
| SW118 FIND 21 | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| B14531.001.130 | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| SW118-21 | 5/1 Secondary reference Emerson Automation Solutions Final Control Us Lp Div Navy Product Team |
| SW118 FIND 21 | 5/1 Secondary reference Emerson Automation Solutions Final Control Us Lp Div Navy Product Team |
| SW118-21 | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
NSN 4820-01-381-0389 is a Retainer,disk,valve, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-381-0389 has 3 manufacturer part numbers on file: SW118-21CP (Naval Inventory Control Point Mechanicsburg), SW118 FIND 21CP (Naval Inventory Control Point Mechanicsburg), B14531.001.130CP (Naval Inventory Control Point Mechanicsburg).
Key specifications for SW118-21CP: Criticality Code Justification: ZZZY; Material Document and Classification: ASTM B61 ASSN STD SINGLE MATERIAL RESPONSE; Valve Size for Which Designed: 0.500 INCHES IN; Special Features: WARN RING. 6 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.