The Retainer,seat,valve, cataloged under National Stock Number 4820-01-614-1787, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Nil-Cor, Llc. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-614-1787 |
| Primary Part Number | 845-8219247-12 |
| Item Name | Retainer,seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Nil-Cor, Llc |
| Status | ACTIVE |
| Outside Diameter | 5.080 INCHES NOMINAL IN |
| Nominal Thread Size | 0.750 INCHES IN |
| Valve Size for Which Designed | 4.0 INCHES IN |
| Inside Diameter | 3.000 INCHES NOMINAL IN |
| Valve Design Control Activity | 53711 |
| Material | NICKEL 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 |
|---|---|
| 845-8219247-12 PRIMARY | Nil-Cor, Llc (USA) |
| 845-8219247 ITEM NO.12 | Naval Sea Systems Command (USA) |
| 845-8219247-12 | Naval Sea Systems Command (USA) |
NSN 4820-01-614-1787 is a Retainer,seat,valve, manufactured by Nil-Cor, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-614-1787 has 3 manufacturer part numbers on file: 845-8219247-12 (Nil-Cor, Llc), 845-8219247 ITEM NO.12 (Naval Sea Systems Command), 845-8219247-12 (Naval Sea Systems Command).
Key specifications for 845-8219247-12: Outside Diameter: 5.080 INCHES NOMINAL IN; Overall Length: 2.432 INCHES NOMINAL IN; Nominal Thread Size: 0.750 INCHES IN; Valve Size for Which Designed: 4.0 INCHES IN. 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.