The Disk,valve, cataloged under National Stock Number 4820-00-702-5434, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Pti Technologies Inc.. Government technical data includes 2 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-702-5434 |
| Primary Part Number | 5-1268-109 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Pti Technologies Inc. |
| Status | ACTIVE |
| Outside Diameter | 0.810 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| 5-1268-109 PRIMARY | Pti Technologies Inc. (USA) |
| Reference | Meaning |
|---|---|
| 5-1268-109 | 3/9 Design control — primary reference Vacco Industries |
| 5-1268-109 | 5/9 Secondary reference Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator |
| 5-1268-109 | 5/2 Secondary reference U.S. Government activity |
NSN 4820-00-702-5434 is a Disk,valve, manufactured by Pti Technologies Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-702-5434 has 1 manufacturer part number on file: 5-1268-109 (Pti Technologies Inc.).
Key specifications for 5-1268-109: Overall Height: 0.950 INCHES NOMINAL IN; Outside Diameter: 0.810 INCHES NOMINAL IN; Special Features: PASSIVATED; Material: STEEL CORROSION RESISTING. 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.