The Valve,safety Relief, cataloged under National Stock Number 4820-01-207-0414, 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 20 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-207-0414 |
| Primary Part Number | BCMGG04EMM |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Dante Valve Company |
| Status | ACTIVE |
| Flow Control Device | DISKDISK |
| Flange Shape | ROUND WITH HOLES ALL ENDS |
| Flange Face Design | PLAIN ALL ENDS |
| Bolt Circle Nominal Diameter | 6.562 INCHES ALL ENDS IN |
| Connection Type | FLANGE ALL ENDS |
| Style Designator | ANGLE FLANGED ENDS |
| Bolt Hole Nominal Diameter | 0.562 INCHES ALL ENDS IN |
| Valve Size | 4.000 INCHES IN |
| Adjustable Pressure Range | +22.0 TO 26.0 POUNDS PER SQUARE INCH LBS |
| Bonnet Type | INSIDE SPRINGINSIDE SPRING |
| Second Connection Face to Centerline Distance | 6.500 INCHES IN |
| Nominal Outside Diameter | 7.688 INCHES ALL ENDS IN |
| Disk Loading Method | SPRINGSPRING |
| Bolt Hole Quantity | 8 ALL ENDS |
| Bonnet Attachment Method | BOLTEDBOLTED |
| First Connection Face to Centerline Distance | 6.500 INCHES IN |
| Material | COPPER ALLOY BODY |
| Material | NICKEL ALLOY STEM |
| Valve Operation Method | AUTOMATIC |
| Nominal Thickness | 0.500 INCHES ALL ENDS IN |
| 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 |
|---|---|
| BCMGG04EMM PRIMARY | Dante Valve Company (USA) |
| 8353 22T 26PSI PRIMARY | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| Reference | Meaning |
|---|---|
| D52FF-04 4IN | 5/9 Secondary reference Dante Valve Company |
| D52FF-04 4IN | 5/9 Secondary reference Danco Valve Company |
| BCMGG04SMM | 5/9 Secondary reference Dante Valve Company |
| BCMGG04SMM | 5/9 Secondary reference Danco Valve Company |
NSN 4820-01-207-0414 is a Valve,safety Relief, manufactured by Dante Valve Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-207-0414 has 2 manufacturer part numbers on file: BCMGG04EMM (Dante Valve Company), 8353 22T 26PSI (Anderson Greenwood Lp Dba Anderson Greenwood Crosby).
Key specifications for BCMGG04EMM: Flow Control Device: DISKDISK; Flange Shape: ROUND WITH HOLES ALL ENDS; Flange Face Design: PLAIN ALL ENDS; Bolt Circle Nominal Diameter: 6.562 INCHES ALL ENDS IN. 20 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.