The Cap,valve, cataloged under National Stock Number 4820-01-457-5284, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is The Sigma Engineering Group, Llc Dba the Sigma Engineering Group Llc. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Item Name | Cap,valve |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | The Sigma Engineering Group, Llc Dba the Sigma Engineering Group Llc (CAGE 8B0A2) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-457-5284 |
| Primary Part Number | SE-RCAP-06P |
| Item Name | Cap,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | The Sigma Engineering Group, Llc Dba the Sigma Engineering Group Llc |
| 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 |
|---|---|
| SE-RCAP-06P PRIMARY | The Sigma Engineering Group, Llc Dba the Sigma Engineering Group Llc (USA) |
| Reference | Meaning |
|---|---|
| 022-09650-000 | D/9 Drawing number reference only Mueller Refrigeration Products Co |
| A-17667 | 5/9 Secondary reference Mueller Refrigeration Products Co |
| 511897 ITEMS 11,12 | 5/9 Secondary reference Mueller Refrigeration Products Co |
NSN 4820-01-457-5284 is a Cap,valve, manufactured by The Sigma Engineering Group, Llc Dba the Sigma Engineering Group Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-457-5284 has 1 manufacturer part number on file: SE-RCAP-06P (The Sigma Engineering Group, Llc Dba the Sigma Engineering Group Llc).
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.