The Valve,safety Relief, cataloged under National Stock Number 4820-00-167-5260, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Cross Mfg Co Inc. Government technical data includes 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-167-5260 |
| Primary Part Number | RV11B |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Cross Mfg Co Inc |
| Status | ACTIVE |
| Flow Control Device | POPPET |
| Nominal Pipe Size Accommodated | 0.750 INCHES FIRST END IN |
| Connection Type | THREADED INTERNAL PIPE FIRST END |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Adjustable Pressure Range | +400.0 TO 3000.0 POUNDS PER SQUARE INCH LBS |
| Features Provided | PRESSURE TIGHT OUTLET SIDE |
| Bonnet Type | INSIDE SPRING |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 0.750 INCHES FIRST END IN |
| Disk Loading Method | SPRING |
| Mounting Facility | THREADED FASTENER |
| Bonnet Attachment Method | INTEGRAL |
| Thread Quantity Per Inch | 14 FIRST END |
| Material | IRON CAST BODY |
| Thread Series Designator | NPTF FIRST END |
| Opening Pressure Setting | 1000.0 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 |
|---|---|
| RV11B PRIMARY | Cross Mfg Co Inc (USA) |
| Reference | Meaning |
|---|---|
| 8267R-811 | 5/9 Secondary reference Age Logistics Corporation |
NSN 4820-00-167-5260 is a Valve,safety Relief, manufactured by Cross Mfg Co Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-167-5260 has 1 manufacturer part number on file: RV11B (Cross Mfg Co Inc).
Key specifications for RV11B: Flow Control Device: POPPET; Nominal Pipe Size Accommodated: 0.750 INCHES FIRST END IN; Connection Type: THREADED INTERNAL PIPE FIRST END; Operating Pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS. 17 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.