Diaphragm Pumps
GEMO RA Sand Mill Diaphragm Pump
RA sand-mill diaphragm pump with modular seal-less design.
Max flow
133 L/min
Max pressure
8.3 bar
Turndown / accuracy
—
Wetted materials
—
Protection
—
Power
—
Features
- Modular seal-less design
- Handles high-viscosity media and media with particles
- Large particles pass without damaging the pump
- Max. flow 133 L/min
- Max. working pressure 8.3 bar
Specifications
| Series | RA |
| Drive | pneumatic |
| Max flow | 133 L/min |
| Max working pressure | 8.3 bar |
| Brand | GEMO |
Applications
Materials & media
Ask for wetted-parts details or check the brochure.
Common chemicals: NaOCl, acids, alkalis, polymers — confirm compatibility when inquiring.
Controls & communication
Control options are listed in notes or confirmed on inquiry.
Models & specs
| Model | Flow | Pressure | Notes | |
| RA-25 | 133 L/min | 8.3 bar | max. air inlet pressure 8.3 bar; suction lift 5.5 m; particles ≤3.2 mm; air consumption 1.3 m³/min |
Dimensions & installation
Dimensional drawings available on request (CAD / PDF).
Downloads
Related / accessories
Pump
GEMO GDC-50P316L Marine Pneumatic Diaphragm Pump
Pump
GEMO GDC-40P316L Marine Pneumatic Diaphragm Pump
Pump
GEMO GDC-40P Marine Pneumatic Diaphragm Pump
Pump
GEMO QBW3-50P Pneumatic Sanitary Diaphragm Pump
Pump
GEMO QBW3-80P Pneumatic Sanitary Diaphragm Pump
Pump
GEMO QBW3-40P Pneumatic Sanitary Diaphragm Pump
Related solutions
Chemical Process Precision Dosing
Reactor feeding, pH neutralization and catalyst injection with hydraulic diaphragm and plunger pumps.
Pharma & Food CIP
High-precision hygienic metering pumps for batching and CIP acid/alkali cleaning.
Municipal Wastewater Dosing
Integrated dosing systems combining metering pumps and online water quality monitoring for coagulation, disinfection and dephosphorization.
Related case studies
Chemical
Chemical Park Acid/Alkali Neutralization
Corrosion-resistant mechanical diaphragm pumps dosing concentrated acid/alkali with closed-loop pH control — 99% compliance.
Textile
Textile Park Decolorization Dosing
Coordinated multi-chemical dosing raised color removal and cut chemical cost by 12%.
Electroplating
Electroplating Cr(VI) Reduction
Sodium bisulfite reduction with ORP interlock keeps Cr(VI) stably below discharge limits.
Need help selecting?
Share duty (flow, pressure, media, controls) — we reply within 1 business day.