The Nrp,valve,butterfl, cataloged under National Stock Number 4820-01-604-3800, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Portland Valve Llc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Nrp,valve,butterfl |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Portland Valve Llc (CAGE 53154) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-604-3800 |
| Primary Part Number | 501-1789 |
| Item Name | Nrp,valve,butterfl |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Portland Valve Llc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 501-1771 PC. NO. 1 | Portland Valve Llc (USA) |
| 501-1789 PRIMARY | Portland Valve Llc (USA) |
NSN 4820-01-604-3800 is a Nrp,valve,butterfl, manufactured by Portland Valve Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-604-3800 has 2 manufacturer part numbers on file: 501-1771 PC. NO. 1 (Portland Valve Llc), 501-1789 (Portland Valve Llc).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-606-7039. Verify interchangeability with system specifications before substitution.
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.