Rotorflo R31S MS Stainless Steel Rotary Lobe Pump - Heated Build, DIN Fittings, excl. Pressure Relief Valve / 40mm
18206
The Rotorflo R31S MS is a Rotorflo R31S MS stainless steel rotary lobe pump – Heated Build.
Specifications
| Brand | Rotorflo |
| Item code | 830007531 |
| Model | Rotorflo R31S MS |
| Build | Heated Build, DIN Fittings, excl. Pressure Relief Valve / 40mm |
| Type | Positive displacement rotary lobe pump, 316 stainless steel wetted parts – gentle, low-shear, self-priming, reversible; flow proportional to speed |
| Inlet / outlet | Ø40 mm |
| Displacement | 18 m³/h at 1 000 rpm (1.8 m³/h per 100 rpm) on water at 20 °C |
| Speed range | 100–1 000 rpm (geared motor or variable speed drive) |
| Maximum differential pressure | 16 bar up to 700 rpm, 12 bar at 1 000 rpm (≈ 163.2 m / 122.4 m head) |
| Maximum viscosity | 270 poise at 100 rpm down to 3 poise at 1 000 rpm |
| NPSH required | 1.6 m at 100 rpm to 6 m at 1 000 rpm |
| Power at 1 000 rpm | 1.6 kW at 1 bar, 2 kW at 2 bar, 3.2 kW at 4 bar, 4 kW at 6 bar, 4.8 kW at 8 bar, 5.5 kW at 10 bar, 6 kW at 12 bar, 5.8 kW at 15 bar |
| Speed (rpm) | 200 400 600 800 1000 |
| Flow on water, low pressure (m³/h) | 3.6 7.2 10.8 14.4 18 |
| Maximum differential pressure (bar) | 16 16 16 14 12 |
| Maximum viscosity (poise) | 120 38 20 10 3 |
| NPSH required (m) | 1.6 2.3 3 3.9 6 |
Technical Data and Downloads (PDF)
Download the technical information for the Rotorflo R31S MS Stainless Steel Rotary Lobe Pump - Heated Build, DIN Fittings, excl. Pressure Relief Valve:
Rotorflo R31S Performance Curve
65 kB | Download
Rotorflo Selection Data
42 kB | Download
Rotorflo Pump Dimensions
1 MB | Download
Rotorflo Performance Curves catalogue section
519 kB | Download
Applications
- Hygienic transfer in food, dairy and beverage plants
- Pharmaceutical and cosmetic products
- Viscous, shear-sensitive and solids-laden liquids
Features
- Stainless steel rotary lobe design – gentle, low-shear pumping
- Hygienic, CIP-cleanable construction
- Standard, heated or jacketed build as stated
- Fittings and pressure relief valve options
Need help choosing or want a price?
Our pump team will check the right size for your flow and head and give you a quote.
WhatsApp us: 082 516 2248 Get a Quote / Size my pump info@pumps.co.za
