The Alfa Laval SX Rotary Lobe Pump is designed with optimized pump head geometry and multi-lobe rotors to ensure low-shear operation with minimum pulsation. This makes the SX the best choice for maintaining the integrity of delicate products. The pump is designed according to the most stringent hygienic design standards and with verified, effective Cleaning-in-Place (CIP) and Sterilization-in-Place (SIP).
The SX Rotary Lobe pump is designed for gentle transportation of process fluids in hygienic and ultra-clean applications in the biotechnology and pharmaceutical industries, in the home and personal care sector, and for demanding food applications. The SX Rotary Lobe Pump is available with 14 different pump head displacements based on seven different gearbox modules to handle flow rates up to 115 m3/h and differential pressures up to 15 bar.
Bareshaft Pump Dimensions
Vertically ported
All dimensions in mm:
Horizontally ported
All dimensions in mm
Standard specification
- Product wetted steel parts: W. 1.4404 (316L)
- Inside surface finish: Mech Ra ≤ 0.8
- Gearbox: Cast iron
- Base plate: Stainless steel
- Coupling guard: Stainless steel
- Rotor: Four-lobe
- Product wetted elastomers: EPDM
- Other elastomers: FPM
- Shaft seal: Single mechanical (R00)
- Rotary seal face: Carbon
- Stationary seal face: Stainless steel
Shaft seals
- Single, single flush and double mechanical available. All options are fully front loading and interchangeable.
- Max flush pressure, single flush: 0.5 bar
- Max flush pressure, double mechanical: 1 bar over product pressure
- Water consumption, flushed or double mechanical: 0.5 l/min
- Flush connections: BSPT or NPT
Temperature
- Max process and CIP temperature: 150°C
Motor
- Gear motor, 4 poles, to IEC metric standard, 50/60 Hz, suitable for frequency conversion, IP55, insulation class F.
Flows/Pressures/Connections
Shaft Seal Options
• Single or single flush/quench (steam barrier for aseptic application) R00 type mechanical seals.
• Double R00 type mechanical seal for flush.
All sealing options are fully front loading and fully interchangeable without the need for additional housings or pump component changes. Specialised
seal setting of the mechanical seal is not required as the seal is dimensionally set on assembly. This feature further enhances fast and efficient
on-site seal interchangeability.
Materials for Mechanical Seals
Carbon/Stainless Steel, Silicon Carbide/Silicon Carbide or variations of these materials to suit fluid being pumped and/or application requirements. The
seal seat and face material combinations are all EHEDG compliant.
Standard Specification Options
• Screwed male inlet and outlet ports to DIN11851, DIN11864, SMS, ISS/IDF, RJT or Tri-clamp.
• Heating/Cooling Jacket for Rotorcase Cover.
• ATEX compliance.
• Complete pump unit comprising: Pump + Baseplate (mild or stainless steel) + coupling with guard + Geared electric motor suitable for (or supplied
with) frequency speed control or manual variable speed drive (advise motor enclosure and electrical supply).
Pump Sizing
In order to correctly size a rotary lobe pump some essential information is required. Provision of this information listed below enables our Technical
Support personnel to obtain the optimum pump selection.
Product/Fluid Data
• Fluid to be pumped
• Viscosity
• SG/Density
• Pumping temperature, minimum, normal and maximum
• Cleaning in Place temperature(s), minimum, normal and maximum
Performance Data
• Flow rate, minimum, normal and maximum
• Discharge head/pressure (closest to pump outlet)
• Suction condition
1.3.185
Glyanec