The Union Ring, cataloged under National Stock Number 4730-01-122-4375, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-122-4375 |
| Item Name | Union Ring |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| General Characteristics Item Description | PLASTIC POLYVINYL CHLORIDE 2 IN. IN |
| 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 |
|---|---|
| BVAP153-1PC39PVC2IN | 3/9 Design control — primary reference Rockwell Intl Corp Flow Control Div |
| BVA P153-1 PIEC | C/1 Advisory reference — outside the item-of-supply concept Rockwell Intl Corp Flow Control Div |
| BVAP153-1 PIECE | C/1 Advisory reference — outside the item-of-supply concept Rockwell Intl Corp Flow Control Div |
| BVAP153-1-39PVC2IN | 5/9 Secondary reference Rockwell Intl Corp Flow Control Div |
| 229-3901-29 | 5/9 Secondary reference Rockwell Intl Corp Flow Control Div |
NSN 4730-01-122-4375 is a Union Ring, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5331-01-125-3521. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-01-122-4375: General Characteristics Item Description: PLASTIC POLYVINYL CHLORIDE 2 IN. IN. 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.