The Valve,safety Relief, cataloged under National Stock Number 4820-01-435-1649, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Hydraforce Inc. Government technical data includes 7 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-435-1649 |
| Primary Part Number | RV12-26A-8B-N-15 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Hydraforce Inc |
| Status | ACTIVE |
| Style Designator | SCREW-IN CARTRIDGE |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Maximum Operating Temp | 120.0 CELSIUS SINGLE RESPONSE DEGC |
| Media for Which Designed | FUEL/OIL, HYDROCARBON SINGLE RESPONSE |
| Material | ALUMINUM ALLOY BODY |
| Opening Pressure Setting | 15.0 POUNDS PER SQUARE INCH LBS |
| Valve Operation Method | AUTOMATIC |
| 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 |
|---|---|
| RV12-26A-8B-N-15 PRIMARY | Hydraforce Inc (USA) |
| Reference | Meaning |
|---|---|
| RV12-26A-8B-N-15 | 5/9 Secondary reference Hamworthy Kse Ab |
| RV12-26A-8B-N-15 | 5/9 Secondary reference Tts Marine Ab Formerly Tts Ships Equipment Ab Div Dry Cargo Handling |
| 17158 IT 12 | 5/9 Secondary reference Tts Marine Ab Formerly Tts Ships Equipment Ab Div Dry Cargo Handling |
| 17158 IT 12 | 5/9 Secondary reference Hamworthy Kse Ab |
NSN 4820-01-435-1649 is a Valve,safety Relief, manufactured by Hydraforce Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-435-1649 has 1 manufacturer part number on file: RV12-26A-8B-N-15 (Hydraforce Inc).
Key specifications for RV12-26A-8B-N-15: Style Designator: SCREW-IN CARTRIDGE; Operating Pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Maximum Operating Temp: 120.0 CELSIUS SINGLE RESPONSE DEGC; Special Features: PORTS 1 IN. BSP IN. 7 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.