The Disk,valve, cataloged under National Stock Number 4820-01-115-3979, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Hunt Valve Company, Inc.. Government technical data includes 9 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-115-3979 |
| Primary Part Number | WAL-B01-08722 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Hunt Valve Company, Inc. |
| Status | ACTIVE |
| Shoulder Width | 0.650 INCHES NOMINAL IN |
| Shoulder Height | 0.160 INCHES NOMINAL IN |
| Style Designator | PLUG |
| Seat Angle | 75.0 DEGREES NOMINAL |
| Nominal Thread Size | 1.000 INCHES IN |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 14 |
| Material | STEEL |
| Thread Series Designator | UNS |
| 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 |
|---|---|
| WAL-B01-08722 PRIMARY | Hunt Valve Company, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 1B01BS08722 | 5/9 Secondary reference The Walworth Company |
| 10-90-0011 ITEM 3 1IN | 5/9 Secondary reference U.S. Government activity |
| SS845-1889508 ITEM3 1IN | 5/2 Secondary reference U.S. Government activity |
| 845-1889508-ITE | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 314SC | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 1B01S08722 | 5/9 Secondary reference Hunt Valve Company, Inc. |
| SS845-1889508 | D/9 Drawing number reference only U.S. Government activity |
| 10-90-0011 | D/9 Drawing number reference only U.S. Government activity |
NSN 4820-01-115-3979 is a Disk,valve, manufactured by Hunt Valve Company, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-115-3979 has 1 manufacturer part number on file: WAL-B01-08722 (Hunt Valve Company, Inc.).
3 possible matches (shared part number, not a government interchangeability claim): 4820-01-115-5237, 4820-01-229-3416, 5330-01-290-6069. Verify interchangeability with system specifications before substitution.
Key specifications for WAL-B01-08722: Overall Height: 1.277 INCHES NOMINAL IN; Shoulder Width: 0.650 INCHES NOMINAL IN; Shoulder Height: 0.160 INCHES NOMINAL IN; Style Designator: PLUG. 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.