The Valve,vacuum Breaking, cataloged under National Stock Number 4820-01-416-5949, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Itt Hoffman Specialty Mfg Co. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-416-5949 |
| Primary Part Number | NO.62 |
| Item Name | Valve,vacuum Breaking |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Itt Hoffman Specialty Mfg Co |
| Status | ACTIVE |
| Flow Control Device | POPPET |
| Absolute Pressure Range | +0.2 TO 20.0 |
| End Connection Quantity | 1 |
| First End Connection Type | THREADED EXTERNAL PIPE |
| Temp Adjustability | NOT ADJUSTABLE |
| First End Nominal Pipe Size Accommodated | 0.750 INCHES IN |
| Material | COPPER ALLOY BODY |
| Material | COPPER ALLOY FLOW CONTROL DEVICE |
| Material | COPPER ALLOY STEM |
| Media for Which Designed | AIR |
| Absolute Pressure Setting | 2.0 |
| First End Nominal Thread Size | 0.750 INCHES 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 |
|---|---|
| BUL SVB-886 NO.62 | Itt Hoffman Specialty Mfg Co (USA) |
| NO.62 PRIMARY | Itt Hoffman Specialty Mfg Co (USA) |
| Reference | Meaning |
|---|---|
| BUL SVB-886 NO. | C/1 Advisory reference — outside the item-of-supply concept Itt Hoffman Specialty Mfg Co |
NSN 4820-01-416-5949 is a Valve,vacuum Breaking, manufactured by Itt Hoffman Specialty Mfg Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-416-5949 has 2 manufacturer part numbers on file: BUL SVB-886 NO.62 (Itt Hoffman Specialty Mfg Co), NO.62 (Itt Hoffman Specialty Mfg Co).
Key specifications for NO.62: Flow Control Device: POPPET; Absolute Pressure Range: +0.2 TO 20.0; End Connection Quantity: 1; First End Connection Type: THREADED EXTERNAL PIPE. 12 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.