The Valve,relief,pressure and Temper, cataloged under National Stock Number 4820-01-237-9449, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-237-9449 |
| Item Name | Valve,relief,pressure and Temper |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Body Style | STRAIGHT THRU |
| Material | STEEL CORROSION RESISTING BODY |
| Reference Number Differentiating Characteristics | MAGNETIC PERMEABILITY SHALL NOT EXCEED 2.0 AFTER FABRICATION |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 193415-20 | 3/1 Design control — primary reference Bosch Rexroth Corporation Div Industrial Hydraulics |
| DBDS20K-12/315-S0481VM | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| BM-S-527 ITEM 137VM | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| BM-S-527 ITEM 137 | 5/9 Secondary reference Metso Minerals Industries, Inc. Dba Bulk Material Handling |
| 193415-20VM | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| BM-S-527 ITEM 237VM | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
NSN 4820-01-237-9449 is a Valve,relief,pressure and Temper, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-237-9449: Body Style: STRAIGHT THRU; Special Features: CARTRIDGE STYLE; Material: STEEL CORROSION RESISTING BODY; Reference Number Differentiating Characteristics: MAGNETIC PERMEABILITY SHALL NOT EXCEED 2.0 AFTER FABRICATION. 3 specifications are 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.