The Disk,valve, cataloged under National Stock Number 4820-01-540-1408, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Nibco Inc Chemtrol Div. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-540-1408 |
| Primary Part Number | R015484 ASBLY |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Nibco Inc Chemtrol Div |
| Status | ACTIVE |
| Pressure Rating | 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Temp Rating | 366.0 FAHRENHEIT MAXIMUM DEGF |
| Material Document and Classification | TFE NATIONAL SPEC SINGLE MATERIAL RESPONSE |
| Media for Which Designed | STEAM |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE |
| 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 |
|---|---|
| R015484 ASBLY PRIMARY | Nibco Inc Chemtrol Div (USA) |
| Reference | Meaning |
|---|---|
| R015484 ASBLY | 3/9 Design control — primary reference Nibco Inc |
| S-235-Y PT 11, 12, 13 .75IN | 5/9 Secondary reference Nibco Inc |
| R015484 ASBLY | 5/9 Secondary reference Nibco Inc |
NSN 4820-01-540-1408 is a Disk,valve, manufactured by Nibco Inc Chemtrol Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-540-1408 has 1 manufacturer part number on file: R015484 ASBLY (Nibco Inc Chemtrol Div).
Key specifications for R015484 ASBLY: Pressure Rating: 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS; Temp Rating: 366.0 FAHRENHEIT MAXIMUM DEGF; Material Document and Classification: TFE NATIONAL SPEC SINGLE MATERIAL RESPONSE; Special Features: ASSEMBLY OF DISC HOLDER, DISK AND DISC NUT; DISC HOLDER MATERIAL: BRONZE ASTM B62; DISC NUT MATERIALS: BRONZE ASTM B62/ASTM B98, ALLOY C65100 WITH SS WASHER. 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.