The Pumping Unit,sewage, cataloged under National Stock Number 4630-01-646-6339, is classified within Federal Supply Class 4630 (Sewage Treatment Equipment) of the Water Purification and Sewage Treatment group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4630-01-646-6339 |
| Item Name | Pumping Unit,sewage |
| FSC / FSG | 4630 / 46 — Sewage Treatment Equipment |
| Status | ACTIVE |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY C/W PC4 AIR UNIT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| PX8/SSAAA/BNS/BN/BN/0014 | 3/9 Design control — primary reference Psg California, Llc Div Dover Corporation |
NSN 4630-01-646-6339 is a Pumping Unit,sewage, classified under FSC 4630, Sewage Treatment Equipment. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4320-01-659-1422. Verify interchangeability with system specifications before substitution.
Key specifications for 4630-01-646-6339: Part Name Assigned by Controlling Agency: PUMPING UNIT, SEWAGE; End Item Identification: MARS TANKER; Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY C/W PC4 AIR UNIT. 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.