The Seat,valve, cataloged under National Stock Number 4820-01-260-2553, 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 1 specification, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-260-2553 |
| Primary Part Number | PB-662Q ITEM 1 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Haywardindl. Products, Inc. |
| Status | ACTIVE |
| Material | STEEL CORROSION RESISTING OVERALL |
| 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 |
|---|---|
| 90-1 | Haywardindl. Products, Inc. (USA) |
| 90-1 | Hayward Industrial Products, Inc Dba Hayward Plastic Products Division Div Eaton Filtration, Llc (USA) |
| PB-662Q ITEM 1 PRIMARY | Haywardindl. Products, Inc. (USA) |
| Reference | Meaning |
|---|---|
| PB-662K ITEM 1 | 3/9 Design control — primary reference Wright Austin Co |
| 90-1 | 5/9 Secondary reference Wright Austin Co |
NSN 4820-01-260-2553 is a Seat,valve, manufactured by Haywardindl. Products, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-260-2553 has 3 manufacturer part numbers on file: 90-1 (Haywardindl. Products, Inc.), 90-1 (Hayward Industrial Products, Inc Dba Hayward Plastic Products Division Div Eaton Filtration, Llc), PB-662Q ITEM 1 (Haywardindl. Products, Inc.).
Key specifications for PB-662Q ITEM 1: End Item Identification: WRIGHT AUSTIN CO,FLOAT TRAP,MODEL 90AC; Material: STEEL CORROSION RESISTING OVERALL. 1 specification is 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.