The Cap,valve, cataloged under National Stock Number 4820-01-331-8774, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Haywardindl. Products, Inc.. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-331-8774 |
| Primary Part Number | AVD0400B ITEM2 |
| Item Name | Cap,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Haywardindl. Products, Inc. |
| Status | ACTIVE |
| Material Document and Classification | ASTMA395 ASSN STD SINGLE MATERIAL RESPONSE |
| Material | IRON CAST |
| 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 |
|---|---|
| AVC10576 4IN | Haywardindl. Products, Inc. (USA) |
| AVD0400B ITEM2 PRIMARY | Haywardindl. Products, Inc. (USA) |
| Reference | Meaning |
|---|---|
| AVD0400B | D/9 Drawing number reference only Haywardindl. Products, Inc. |
NSN 4820-01-331-8774 is a Cap,valve, manufactured by Haywardindl. Products, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-331-8774 has 2 manufacturer part numbers on file: AVC10576 4IN (Haywardindl. Products, Inc.), AVD0400B ITEM2 (Haywardindl. Products, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-331-8880. Verify interchangeability with system specifications before substitution.
Key specifications for AVD0400B ITEM2: Material Document and Classification: ASTMA395 ASSN STD SINGLE MATERIAL RESPONSE; Material: IRON CAST. 2 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.