The Disk,valve, cataloged under National Stock Number 4820-00-142-2790, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Acme Products & Engineering Inc. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-142-2790 |
| Primary Part Number | P809A-AP |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Acme Products & Engineering Inc |
| Status | ACTIVE |
| Pressure Rating | 45.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Outside Diameter | 1.406 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Inside Diameter | 0.594 INCHES NOMINAL IN |
| Media for Which Designed | WATER |
| Material | RUBBER |
| 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 |
|---|---|
| P809A-AP | Acme Products & Engineering Inc (USA) |
| Reference | Meaning |
|---|---|
| P809A | 3/9 Design control — primary reference Atlas Valve Co |
NSN 4820-00-142-2790 is a Disk,valve, manufactured by Acme Products & Engineering Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-142-2790 has 1 manufacturer part number on file: P809A-AP (Acme Products & Engineering Inc).
Key specifications for P809A-AP: Overall Height: 0.281 INCHES NOMINAL IN; Pressure Rating: 45.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Outside Diameter: 1.406 INCHES NOMINAL IN; Style Designator: PLAIN. 6 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.