The Seat,valve, cataloged under National Stock Number 4820-00-445-8614, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Tyco Fire Products Lp. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-00-445-8614 |
| Primary Part Number | 20-03283PC4 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Tyco Fire Products Lp |
| Status | ACTIVE |
| Body Outside Diameter | 3.500 INCHES NOMINAL IN |
| Taper Minor Diameter | 0.850 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Body Inside Diameter | 2.500 INCHES NOMINAL IN |
| Seat Radius | 0.250 INCHES NOMINAL IN |
| Material | PLASTIC POLYAMIDE NYLON 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 |
|---|---|
| 20-03283PC4 PRIMARY | Tyco Fire Products Lp (USA) |
| 20-03329 PRIMARY | Tyco Fire Products Lp (USA) |
| V3283PC4 | Tyco Fire Products Lp (USA) |
| V-3329 PRIMARY | Portland Valve Llc (USA) |
| Reference | Meaning |
|---|---|
| V3329 | 5/9 Secondary reference Tyco Fire Products Lp |
NSN 4820-00-445-8614 is a Seat,valve, manufactured by Tyco Fire Products Lp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-445-8614 has 4 manufacturer part numbers on file: 20-03283PC4 (Tyco Fire Products Lp), 20-03329 (Tyco Fire Products Lp), V3283PC4 (Tyco Fire Products Lp), V-3329 (Portland Valve Llc).
Key specifications for 20-03283PC4: Overall Height: 0.406 INCHES NOMINAL IN; Body Outside Diameter: 3.500 INCHES NOMINAL IN; Taper Minor Diameter: 0.850 INCHES NOMINAL IN; Style Designator: PLAIN. 7 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.