The Valve,ball, cataloged under National Stock Number 4820-01-528-8981, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Delaware Mfg Industries Corp. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-528-8981 |
| Primary Part Number | BVMM-0500A-1111 |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Delaware Mfg Industries Corp |
| Status | ACTIVE |
| Minimum Operating Temp | -20.0 FAHRENHEIT DEGF |
| Style Designator | STRAIGHT THRU |
| Operating Pressure | 6000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Maximum Operating Temp | 212.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Material | STEEL BODY |
| Material | STEEL FLOW CONTROL DEVICE |
| Material | PLASTIC ACETAL SEAT |
| Material | STEEL STEM |
| Valve Operation Method | MANUAL |
| 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 |
|---|---|
| HI-721-1000 ITEM 50 REV P | Hhe Services, Inc. (USA) |
| BVMM-0500A-1111 PRIMARY | Delaware Mfg Industries Corp (USA) |
| Reference | Meaning |
|---|---|
| HI-721-1000 | D/9 Drawing number reference only Hhe Services, Inc. |
NSN 4820-01-528-8981 is a Valve,ball, manufactured by Delaware Mfg Industries Corp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-528-8981 has 2 manufacturer part numbers on file: HI-721-1000 ITEM 50 REV P (Hhe Services, Inc.), BVMM-0500A-1111 (Delaware Mfg Industries Corp).
Key specifications for BVMM-0500A-1111: Minimum Operating Temp: -20.0 FAHRENHEIT DEGF; Style Designator: STRAIGHT THRU; Operating Pressure: 6000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Maximum Operating Temp: 212.0 FAHRENHEIT SINGLE RESPONSE DEGF. 9 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.