The Valve,safety Relief, cataloged under National Stock Number 4820-01-044-7556, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Anderson Greenwood Lp Dba Anderson Greenwood Crosby. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | Valve,safety Relief |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | L & L Boiler Maintenance Inc (CAGE 0ATF2); Anderson Greenwood Lp Dba Anderson Greenwood Crosby (CAGE 01343) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-044-7556 |
| Primary Part Number | 11W202 1-1/4X1-1/2 IN |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| 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 |
|---|---|
| 380019358 | L & L Boiler Maintenance Inc (USA) |
| 11W202 1-1/4X1-1/2 IN PRIMARY | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| Reference | Meaning |
|---|---|
| 11W202 1-1/4X1- | C/1 Advisory reference — outside the item-of-supply concept Kunkle Industries Inc Lonergan Valve Div |
| 11W202 1-1/4X1-1/2 IN | 5/9 Secondary reference Kunkle Industries Inc Lonergan Valve Div |
| 380019358 | 5/9 Secondary reference D & J Parts Inc |
NSN 4820-01-044-7556 is a Valve,safety Relief, manufactured by Anderson Greenwood Lp Dba Anderson Greenwood Crosby, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-044-7556 has 2 manufacturer part numbers on file: 380019358 (L & L Boiler Maintenance Inc), 11W202 1-1/4X1-1/2 IN (Anderson Greenwood Lp Dba Anderson Greenwood Crosby).
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.