The Valve,safety Relief, cataloged under National Stock Number 4820-01-484-6936, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Johnson Controls Navy Systems, Llc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-484-6936 |
| Primary Part Number | 022-08844 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Johnson Controls Navy Systems, Llc |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 1.250 INCHES ALL ENDS IN |
| 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 |
|---|---|
| 376-84019-000 ITEM 1 | Johnson Controls Navy Systems, Llc (USA) |
| 022-08844 PRIMARY | Johnson Controls Navy Systems, Llc (USA) |
| 022 08844 000 | Johnson Controls Ltd, York Navy Systems (GBR) |
| B518JYT-250 | Henry Technologies, Inc. (USA) |
| Reference | Meaning |
|---|---|
| B518-JYT-250 CL | C/1 Advisory reference — outside the item-of-supply concept Naval Inventory Control Point Mechanicsburg |
| B518JYT-250 | 5/9 Secondary reference Henry Technologies, Inc. |
NSN 4820-01-484-6936 is a Valve,safety Relief, manufactured by Johnson Controls Navy Systems, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-484-6936 has 4 manufacturer part numbers on file: 376-84019-000 ITEM 1 (Johnson Controls Navy Systems, Llc), 022-08844 (Johnson Controls Navy Systems, Llc), 022 08844 000 (Johnson Controls Ltd, York Navy Systems), B518JYT-250 (Henry Technologies, Inc.).
Key specifications for 022-08844: Nominal Pipe Size Accommodated: 1.250 INCHES ALL ENDS IN; Special Features: USE W/REFRIGERANT 134A,SEAL MATT.,SHALL BE NEOP-1,OR TEF. A; End Item Identification: ARLEIGH BURKE CLASS DDG. 1 specification is 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.