The Valve,safety Relief, cataloged under National Stock Number 4820-01-561-9742, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Mueller Refrigeration Products Co. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Adrick Marine Group, Inc (CAGE 5V854); Mueller Refrigeration Products Co (CAGE 1BND5) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-561-9742 |
| Primary Part Number | AQ-17970/SET 230PSI |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Mueller Refrigeration Products Co |
| 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 |
|---|---|
| 11043682-02 ITEM 12 | Adrick Marine Group, Inc (USA) |
| AQ-17970/SET 230PSI PRIMARY | Mueller Refrigeration Products Co (USA) |
| 512849 P/N AQ-17907/230PSI SET | Mueller Refrigeration Products Co (USA) |
| Reference | Meaning |
|---|---|
| 512849 | D/9 Drawing number reference only Mueller Refrigeration Products Co |
NSN 4820-01-561-9742 is a Valve,safety Relief, manufactured by Mueller Refrigeration Products Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-561-9742 has 3 manufacturer part numbers on file: 11043682-02 ITEM 12 (Adrick Marine Group, Inc), AQ-17970/SET 230PSI (Mueller Refrigeration Products Co), 512849 P/N AQ-17907/230PSI SET (Mueller Refrigeration Products Co).
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.