The Valve,safety Relief, cataloged under National Stock Number 4820-01-214-4176, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Circor Pumps North America Llc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Circor Pumps North America Llc (CAGE 59180) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-214-4176 |
| Primary Part Number | S414A |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Circor Pumps North America 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 |
|---|---|
| SG-4453 PIECE 34 | Circor Pumps North America Llc (USA) |
| S414A PRIMARY | Circor Pumps North America Llc (USA) |
| Reference | Meaning |
|---|---|
| SG-4453 PIECE 34 | 5/9 Secondary reference Siemens Energy, Inc. |
| SG-4453 | D/9 Drawing number reference only Siemens Energy, Inc. |
| S414A | 5/9 Secondary reference Siemens Energy, Inc. |
| S-414A/0200 | 5/9 Secondary reference Siemens Energy, Inc. |
NSN 4820-01-214-4176 is a Valve,safety Relief, manufactured by Circor Pumps North America Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-214-4176 has 2 manufacturer part numbers on file: SG-4453 PIECE 34 (Circor Pumps North America Llc), S414A (Circor Pumps North America 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.