Application

The SX range of rotary lobe pumps has been designed for use on wide

ranging applications within the Pharmaceutical, Biotechnology, Fine

Chemical and Speciality Food industries. Being certified by EHEDG

(European Hygienic Equipment Design Group) as fully CIP cleanable

to their protocol, the SX range is ideally suited to applications where

cleanability and corrosion resistance is paramount.

In addition the SX pump range also conforms to USA 3-A Sanitary

Standard and all media contacting components are FDA compliant.

The SX pump operates with a high efficiency, low shear pumping

action for assured gentle handling of delicate and sensitive media.

The SX pump range is also classified for use in potentially explosive

atmospheres under the ATEX Directive 94/9/EC Group II, Categories 2

& 3, with temperature classification T1 to T4.

The SX range is compact in size, capable of flow rates up to 115 m³/h

and pressures up to 15 bar.

Standard Design

Pump Gearbox

The SX pump with its conventional lobe pump design concept has a

robust cast iron gearbox, which provides maximum shaft rigidity and

easy oil seal replacement. The SX range in series 1 - 4 has a universal

gearbox design. This gives the flexibility of mounting pumps with

the inlet and outlet ports in either a vertical or horizontal plane, by

changing the foot and its position.

The SX range in series 5 & 6 has dedicated gearbox castings, which

also allows the inlet and outlet ports to be in either the vertical or

horizontal plane. The SX series 7 has a dedicated gearbox casting

allowing inlet and outlet ports in a vertical plane only.

Pump head Construction

The SX pump has sanitary design full bore inlet and outlet ports to

International Standards, maximising inlet and outlet port efficiency and

NPSH characteristics. Vertical porting and unique rotorcase internal

profile enhances self-draining and self venting whilst maintaining

optimum volumetric efficiency.

The SX pump has four lobe rotors, designed using CFD (Computational

Fluid Dynamics) to develop the optimum rotor geometry - possibly the

first rotary lobe pump to be developed using this technology. All rotors

are rated to 150°C facilitating use with CIP/SIP processes.

Materials of Construction

Pump gearbox - high quality grey cast iron.

Pumphead - product wetted components in 316L.

Product wetted elastomers of EPDM, MVQ, FPM all FDA conforming.

All media contacting elastomers are controlled compression joints, the

latest technology where static and dynamic elastomer seals are used

to prevent pumped media leaking to atmosphere.

All product wetted rubberparts are in compliance with FDA section 21

CFR 177.2600 & section 21 CFR 177.1550 (PTFE). EPDM Elastomers

are furthermore in compliance with USP Class VI section 88 biological

reactivity test, in Vivo.

1. Front cover compression joint

2. Spline sealing cup seal

3. Cup seal

4. Squad ring

Weight

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.

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

Standard Specification Options

- Screwed male inlet and outlet ports to DIN11851, SMS, ISS/IDF,

RJT or Tri-clamp.

- Heating/Cooling Jacket for Rotorcase Cover.

- Electropolishedproduct wetted components.

- Full material traceability on request to EN 10204.3.1.

- Electroless nickel plated gearbox.

- 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).

Flows/Pressures/Connections

Note 1. These pressure ratings may vary for pumps with certain threaded connections.