The Valve,safety Relief, cataloged under National Stock Number 4820-01-503-2765, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Dante Valve Company. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Parameter | Value |
|---|---|
| NSN | 4820-01-503-2765 |
| Primary Part Number | BEMBB04SEE 23T45PSI |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Dante Valve Company |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 1.000 INCHES ALL ENDS IN |
| Style Designator | ANGLE |
| Material Document and Classification | ASTM-B61 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | QQ-N-281 MONEL FED SPEC SINGLE MATERIAL RESPONSE STEM |
| Adjustable Pressure Range | +23.0 TO 45.0 POUNDS PER SQUARE INCH LBS |
| Disk Loading Method | SPRING |
| Material | NICKEL ALLOY STEM |
| Material | COPPER ALLOY 922 BODY |
| Opening Pressure Setting | 23.0 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 |
|---|---|
| D1000-946 ASSY BEMBB04SEE | Dante Valve Company (USA) |
| BEMBB04SEE 23T45PSI PRIMARY | Dante Valve Company (USA) |
| Reference | Meaning |
|---|---|
| D1000-946 | D/9 Drawing number reference only Danco Valve Company |
| BEMBB04SEE 23T45PSI | 3/9 Design control — primary reference Danco Valve Company |
| D1000-946 ASSY BEMBB04SEE | 5/9 Secondary reference Danco Valve Company |
NSN 4820-01-503-2765 is a Valve,safety Relief, manufactured by Dante Valve Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-503-2765 has 2 manufacturer part numbers on file: D1000-946 ASSY BEMBB04SEE (Dante Valve Company), BEMBB04SEE 23T45PSI (Dante Valve Company).
Key specifications for BEMBB04SEE 23T45PSI: Nominal Pipe Size Accommodated: 1.000 INCHES ALL ENDS IN; Style Designator: ANGLE; Material Document and Classification: ASTM-B61 ASSN STD SINGLE MATERIAL RESPONSE BODY; Material Document and Classification: QQ-N-281 MONEL FED SPEC SINGLE MATERIAL RESPONSE STEM. 10 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.