
Hydraulic Metering Pumps
Doseuro Type SDI Positive Return Sandwich Hydraulic Diaphragm Pump
Positive-return sandwich hydraulic diaphragm pump, zero leakage, API 675 / ATEX, remote failure detection. Up to ~4028 L/h / ~80 barg (AP).
Max flow
approx. 231 – 4028 L/h
Max pressure
approx. 14 – 80 barg
Turndown / accuracy
—
Wetted materials
316L / PVC / PP / PVDF / PTFE
Protection
—
Power
—
Features
- Zero-leakage sandwich hydraulic diaphragm
- API 675 / ATEX compliant
- Remote failure detection; easy maintenance
- Oil-bath worm gear; multi-head
- Manual or 4–20 mA / BUS
- Internal relief; includes AP high-pressure
Specifications
| Flow | approx. 231 – 4028 L/h |
| Max pressure | approx. 14 – 80 barg |
| Standards | API 675 / ATEX |
| Wetted parts | 316L / PVC / PP / PVDF / PTFE |
| Control | manual / 4–20 mA / BUS |
| Brand | Doseuro |
Applications
Materials & media
| Wetted parts | 316L / PVC / PP / PVDF / PTFE |
Common chemicals: NaOCl, acids, alkalis, polymers — confirm compatibility when inquiring.
Controls & communication
| Control | manual / 4–20 mA / BUS |
Models & specs
| Model | Flow | Pressure | Notes | |
| SD I 175 | 390 L/h | 14 barg | ||
| SD I 250 | 1264 L/h | 14 barg | ||
| SD I 350 | 4028 L/h | 14 barg | ||
| AP SD I 175 | 231 L/h | 40 barg | high-pressure type | |
| AP SD I 250 | 711 L/h | 80 barg | high-pressure type | |
| AP SD I 350 | 1496 L/h | 56 barg | high-pressure type; high pressure can custom |
Dimensions & installation
Dimensional drawings available on request (CAD / PDF).
Downloads
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Need help selecting?
Share duty (flow, pressure, media, controls) — we reply within 1 business day.

