The Seat,valve, cataloged under National Stock Number 4820-01-127-7761, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Aalberts Integrated Piping Systems Americas, Inc.. Government technical data includes 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-127-7761 |
| Primary Part Number | D177300 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Aalberts Integrated Piping Systems Americas, Inc. |
| Status | ACTIVE |
| Body Outside Diameter | 0.861 INCHES NOMINAL IN |
| Body Inside Diameter | 0.500 INCHES NOMINAL IN |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE 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 |
|---|---|
| D177300 PRIMARY | Aalberts Integrated Piping Systems Americas, Inc. (USA) |
| A10M-776 PART D177300 | Aalberts Integrated Piping Systems Americas, Inc. (USA) |
| Reference | Meaning |
|---|---|
| D177300 1-2IN | C/1 Advisory reference — outside the item-of-supply concept Aalberts Integrated Piping Systems Americas, Inc. |
NSN 4820-01-127-7761 is a Seat,valve, manufactured by Aalberts Integrated Piping Systems Americas, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-127-7761 has 2 manufacturer part numbers on file: D177300 (Aalberts Integrated Piping Systems Americas, Inc.), A10M-776 PART D177300 (Aalberts Integrated Piping Systems Americas, Inc.).
Key specifications for D177300: Overall Height: 0.156 INCHES NOMINAL IN; Body Outside Diameter: 0.861 INCHES NOMINAL IN; Body Inside Diameter: 0.500 INCHES NOMINAL IN; Material: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL. 3 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.