The Valve,safety Relief, cataloged under National Stock Number 4820-01-616-4940, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Rix Industries. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-616-4940 |
| Primary Part Number | 515-140 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Rix Industries |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 0.5 INCHES ALL ENDS IN |
| Maximum Operating Temp | 35.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Thread Series Designator | NPT ALL ENDS |
| 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 |
|---|---|
| 515-140 PRIMARY | Rix Industries (USA) |
NSN 4820-01-616-4940 is a Valve,safety Relief, manufactured by Rix Industries, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-616-4940 has 1 manufacturer part number on file: 515-140 (Rix Industries).
Key specifications for 515-140: Nominal Pipe Size Accommodated: 0.5 INCHES ALL ENDS IN; Maximum Operating Temp: 35.0 FAHRENHEIT SINGLE RESPONSE DEGF; Thread Series Designator: NPT ALL ENDS. 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.