The Retainer,disk,valve, cataloged under National Stock Number 4820-01-443-4518, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Floworks Usa Lp Dba Flotech Div Jacksonville. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-443-4518 |
| Primary Part Number | 3-15055-B-05 |
| Item Name | Retainer,disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Floworks Usa Lp Dba Flotech Div Jacksonville |
| Status | ACTIVE |
| Material Document and Classification | ASTM B-62 ASSN STD ALL MATERIAL RESPONSES |
| Valve Size for Which Designed | 3.000 INCHES IN |
| Valve Design Control Activity | 62650 |
| Material | COPPER ALLOY |
| 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 |
|---|---|
| 3-15055-B-05 PRIMARY | Floworks Usa Lp Dba Flotech Div Jacksonville (USA) |
| 3-15055-B-05 | W. & O. Supply, Inc. Dba W & O Supply Inc Div Corporate Location (USA) |
| 15055B PC5 3IN | Floworks Usa Lp Dba Flotech Div Jacksonville (USA) |
| Reference | Meaning |
|---|---|
| 15055B | D/9 Drawing number reference only Floworks Usa Lp Dba Flotech Div Jacksonville |
NSN 4820-01-443-4518 is a Retainer,disk,valve, manufactured by Floworks Usa Lp Dba Flotech Div Jacksonville, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-443-4518 has 3 manufacturer part numbers on file: 3-15055-B-05 (Floworks Usa Lp Dba Flotech Div Jacksonville), 3-15055-B-05 (W. & O. Supply, Inc. Dba W & O Supply Inc Div Corporate Location), 15055B PC5 3IN (Floworks Usa Lp Dba Flotech Div Jacksonville).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-443-4560. Verify interchangeability with system specifications before substitution.
Key specifications for 3-15055-B-05: Material Document and Classification: ASTM B-62 ASSN STD ALL MATERIAL RESPONSES; Valve Size for Which Designed: 3.000 INCHES IN; Special Features: USED ON 170 FT PATROL COASTAL(PC-1)CLASS SHIPS FT; Valve Design Control Activity: 62650. 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.