The Valve,safety Relief, cataloged under National Stock Number 4820-00-947-0010, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Lowell Corporation Dba Porter Ferguson Div Porter Ferguson Division. Government technical data includes 1 specification, 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 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 | 4820-00-947-0010 |
| Primary Part Number | 330449 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Lowell Corporation Dba Porter Ferguson Div Porter Ferguson Division |
| Status | ACTIVE |
| Material | ALUMINUM OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4820-00-947-0010 is a Valve,safety Relief, manufactured by Lowell Corporation Dba Porter Ferguson Div Porter Ferguson Division, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-947-0010 has 2 manufacturer part numbers on file: 330449 (Lowell Corporation Dba Porter Ferguson Div Porter Ferguson Division), 330449 (Bend Research, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 2040-01-165-3209. Verify interchangeability with system specifications before substitution.
Key specifications for 330449: Special Features: 1.906 IN. O/A LG; TOP INTERNALLY THD 0.250 IN.-20 THD SIZE,TH,0.625 IN. DP; HEX WRENCHING FACILITY,0.562 IN. W ACROOS FLATS; 0.493 IN. DIA BY 0.219 IN. LG UNTHRD PORTION; 0.562 IN.-18,TH,0.250 IN. LG EXTERNALLY THD PORTION; BOTTOM PORTION 0.332 IN. DIA BY 0.812 IN. LG IN; Material: ALUMINUM OVERALL. 1 specification is 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.