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Non-Ragging Inline Static Mixer

The Statiflo Non-Ragging (NR) Pipe Mixer – also called a Non-Blocking or Non-Clogging Static Mixer – is a high performance Static Mixer which has been specifically designed for sludge mixing or wastewater applications with high fibre content.

The mixer’s free flow design gives excellent resistant to blocking, clogging and ragging meaning downtime is drastically reduced compare to the use of a regular-style static mixer or other mixing device. Combining the lack of ragging with the high mixing performance and consistent mixture quality achieved by the Statiflo NR Pipe Mixer, it is clear that this product is a must for your wastewater application.

Full testing has been carried out on the Non-Ragging Inline Static Mixer for mixture quality and pressure drop. Along with this, onsite trials have been conducted to prove the mixer’s resistance to blocking, clogging and ragging.

In full-scale trials with a major UK water utility the Statiflo NR Pipe Mixer outperformed all competitor’s designs including a static mixer, an orifice plate and sludge valves.

These pictures and graphs illustrate the superior performance of the Statiflo NR Mixer compared with a competitor’s mixer. The graph shows the typical effects of ragging with increasing headloss and reduced flow until the competitor’s mixer ceased to operate in less than four hours.

The Statiflo NR Mixer is proven to be suitable for the following applications:

  • Sludge blending
  • Sludge thickening
  • Ferric sulphate and ferric chloride dosing for phosphorous removal
  • Coagulant / polymer dosing
  • Chemical dosing of sewage
  • Industrial wastewater treatment with fibres including paperstock
Statiflo Non-Ragging Pipe Mixer
non-ragging pipe mixer: Photos and data from trialling the Statiflo Non-Ragging Mixer
  • Market-leading mixing element designs

Supplied with fixed Non-Ragging (NR) elements with a free flow design which gives excellent resistance to blocking and ragging whilst still providing high mixing performance and consistent mixture qualities.

  • Available for almost all pipe sizes

Diameters from as small as DN50 (2″) with no theoretical upper limit.

  • Superior mixture qualities achievable

Designed to achieve a Coefficient of Variation (CoV) of 0.05 or less – meaning you can take a representative sample shortly after the mixer to improve process control.

  • Accessories to complement

Available with optional integral injection/sample connections.

  • Materials to suit your requirements

Typically supplied in uPVC, stainless steel or epoxy coated carbon steel. Other commercially available metallic materials available on request.

PVC Static Mixer

  • Performance Guarantee

Every Statiflo Non-Ragging Inline Static Mixer comes with guaranteed performance. Our static mixer designs have been extensively and rigorously tested under industry-realistic conditions to allow us to guarantee the mixing performance and the head loss across the mixer. If required Statiflo can perform CFD simulations for specific conditions.

  • Testing Standards

A full visual inspection is carried out on each unit before it leaves our premises, along with a dimensional check and any other testing which is required.

Optional tests available including hydrotest, radiography, magnetic particle inspection (MPI), Dye Penetrant Inspection (DPI), positive material identification (PMI) or ultrasonic testing (UT) are all available.

  • Design Codes and Standards

Available design codes include ASME B31.3, ASME VIII div 1, AD2000 Merkblatt, PED2014/68/EU and many others to suit your requirements.

  • Complete with Statiflo’s Standard Documentation Set

Your Static Inline Mixers will come complete with customised GA Drawing, 3.1 Material Certification, a Certificate of Conformity and one copy of our Installation, Operation and Maintenance Manual.

  • Warranty Period

As standard, Statiflo offers a warranty of 12 months from plant commissioning or 18 months from equipment delivery, whichever is the sooner. Extended warranties can be supplied upon request.

  • Spare Parts / Special Tools

Statiflo products have no moving parts there is no requirement for expensive spares or special tools.

  • Supervision for Installation and Commissioning

The ‘plug and play’ design means there is no requirement for supervision for installation or commissioning. The extremely simple installation is covered entirely by the Installation, Operation & Maintenance manual supplied with each order.

If you would feel more comfortable having guidance on-site, Statiflo can send one of our highly qualified engineers to guide and supervise the installation to give you the confidence that everything is done correctly.


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    The above is a brief over of the Statiflo Non-Ragging Pipe Mixer.

    For further details and information on this product or any others, please complete the attached contact form or visit our contact us page to get in touch with us.

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