The Tube,hydraulic Balance, cataloged under National Stock Number 4320-01-436-1389, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Circor Pumps North America Llc. Government technical data includes 2 specifications, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-436-1389 |
| Primary Part Number | S427EBP/C |
| Item Name | Tube,hydraulic Balance |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Circor Pumps North America Llc |
| Status | ACTIVE |
| General Characteristics Item Description | MATERIAL PER AISI 1018-1026 OR 1108-12115 |
| Material | STEEL |
| 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 |
|---|---|
| SDD 18277 ITEM NO.4 | Circor Pumps North America Llc (USA) |
| S427EBP/C PRIMARY | Circor Pumps North America Llc (USA) |
| Reference | Meaning |
|---|---|
| SDD18277 | D/9 Drawing number reference only Circor Pumps North America Llc |
| S427EBP | C/1 Advisory reference — outside the item-of-supply concept Circor Pumps North America Llc |
NSN 4320-01-436-1389 is a Tube,hydraulic Balance, manufactured by Circor Pumps North America Llc, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-436-1389 has 2 manufacturer part numbers on file: SDD 18277 ITEM NO.4 (Circor Pumps North America Llc), S427EBP/C (Circor Pumps North America Llc).
Key specifications for S427EBP/C: General Characteristics Item Description: MATERIAL PER AISI 1018-1026 OR 1108-12115; Special Features: HYDRAULIC OIL BALANCE TUBE FOR IMO PUMP SD-5490; Part Name Assigned by Controlling Agency: OIL BALANCE TUBE; End Item Identification: NAVY WEAPONS SYSTEMS VN, BOB HOPE CLASS T-AKR 300. 2 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.