The Seat,valve, cataloged under National Stock Number 4820-01-109-3055, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Portland Valve Llc. Government technical data includes 6 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-109-3055 |
| Primary Part Number | 002-0625-49 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Portland Valve Llc |
| Status | ACTIVE |
| Body Outside Diameter | 2.145 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Body Inside Diameter | 1.395 INCHES NOMINAL IN |
| Seat Radius | 0.312 INCHES NOMINAL IN |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE OVERALL |
| Seating Surface Shape | RADIAL |
| 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 |
|---|---|
| 002-0625-49 PRIMARY | Portland Valve Llc (USA) |
| S-2691 ITEM 5 PRIMARY | Portland Valve Llc (USA) |
| Reference | Meaning |
|---|---|
| 002-0625-49 | 5/9 Secondary reference Metso Automation Usa, Inc |
| S-2691 ITEM 5 | 5/9 Secondary reference Metso Automation Usa, Inc |
| S-2691 | D/9 Drawing number reference only Metso Automation Usa, Inc |
NSN 4820-01-109-3055 is a Seat,valve, manufactured by Portland Valve Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-109-3055 has 2 manufacturer part numbers on file: 002-0625-49 (Portland Valve Llc), S-2691 ITEM 5 (Portland Valve Llc).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-274-9975. Verify interchangeability with system specifications before substitution.
Key specifications for 002-0625-49: Overall Height: 0.245 INCHES NOMINAL IN; Body Outside Diameter: 2.145 INCHES NOMINAL IN; Style Designator: PLAIN; Body Inside Diameter: 1.395 INCHES NOMINAL IN. 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.