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Pemo slurry pumps are available in Vertical, Horizontal, Submersible and Multi-Stage versions. Capacities range from 1 to 2000 m3/h, head for single-stage pumps can reach 90 m (295 ft) in the Hardalloy PEMO versions, all shafts, bases and bearings are over-sized to extend pump life and, finally, complete pump packages are compact, with an industrial grade design.

RUBBER LINED OR HARDALLOY DESIGN
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DOUBLE ELASTOMER BELLOW MECH SEAL
HEAVY DUTY
CAPACITY
<2000 M³/Hr
HEAD
<150M
LOW MAINTENANCE

Vertical Slurry Pumps

The robust Jolly series of pumps are built for strength. All shafts are supported above the baseplate by two or three bearings so that the lower part is suspended and works without other bearings or supports. All submersed parts, besides the internal parts of the casings and the impeller, are rubber lined or Hardalloy.

The MEC range are similar to the Jolly range however they are not mounted on cantilever brackets, since they have at their top a strong metallic structure with one lifting eyebolt, through which a metallic rope, chain or any other suspension device keeps them in a vertical position inside tanks or wells.

Similar in design to the Jolly, the main feature of the AUS range is the run dry capability of the special impeller and casing assembly. This makes these pumps suitable for intermittent flow. The pump can run dry without damage and reprime itself when the liquid level returns to normal.

Rubber Lined Submersible Pumps

The Pemo submersible pumps are designed for long life and low maintenance. The wetted parts of the pumps are made of an extremely hard iron alloy called ‘Hardalloy’, which has a hardness rating of over 800 HB. Designed for rugged applications ranging up to 7% solids (max 20mm)

Ideal for use in deep wells where a vertical pump would be too costly or impossible to install. Can be installed without masonry or special structures, they can be set on the bottom of the well or hung from a suspension device.

Horizontal Slurry Pumps
 
The AO/TD range of horizontal slurry pumps are heavy duty end suction pumps, whereas the AO/AB & AO/AB/DC-TC are horizontal with side suction and top discharge. However, all designed to operate in many applications where the operating conditions and the fluid properties, are very aggressive with big solid particles/ high solid concentration.
 
The pumps have double seals in back-to-back configuration with a clean water flush from an external source. The pump casings and the impeller are rubber lined or Hardalloy, and with the AO/TD the bearings are reinforced increasing bearing life and minimising pump maintenance. All ranges can be driven by a flexible coaxial joint or v-belts, with the latter coupling allowing a perfect calibration of the rotational speed of the pump. The motor power for AO/TD is up to 160kW, and for the AO/AB or AO/AB/DC-TC is up to 250kW.
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THE CREST PUMPS LIFETIME GUARANTEE

No matter how old your pump becomes, in the unlikely scenario that you have a problem, our engineers will be on hand to diagnose the issue and help you get up and running again.

That’s why, with Crest Pumps you’ll never need to worry about unplanned downtime again.
 
Talk to us now to discuss your chemical pump requirements or book a free site audit to see how much time and money you could save!
Reliability Redefined

Built to outlast and outperform

Discover the significant savings you can achieve and explore the potential financial benefits that await you.

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Frequently Asked Questions

What is the difference between a diaphragm and centrifugal pump?

A diaphragm pump is a type of positive displacement pump which uses a flexible diaphragm as the only moving part to create pressure and move fluid. It is typically used in applications where a low flow rate, high pressure, or a pulsating flow is required. 

A centrifugal pump is a type of rotodynamic pump that uses a rotating impeller to create pressure and move fluid. It is typically used in applications where a high flow rate ir required. 

How does an AODD pumps work?

An air operated double diaphragm pump also known as an AODD pump is a type of positive displacement pump which operates using compressed air instead of an electric motor. It consists of two flexible diaphragms connected by a shaft, which move back and forth to create suction and discharge cycles.

As compressed air enters one chamber, it pushes the diaphragm outward, forcing fluid out of that side whilst simultaneously drawing fluid into the opposite chamber. A set of check valves ensures that liquid flows in only one direction. The air supply then shifts to the other chamber, repeating the cycle and maintaining a steady flow.

 

What are the advantages of using an AODD pump?

AODD pumps offer versatility, as they can handle a wide range of fluids, including abrasive, viscous and corrosive liquids. They are self-priming and can run dry without damage, making them ideal for unpredictable flow conditions. Additionally, they feature a simple design with minimal moving parts, leading to low maintenance and easy repair.

Can AODD pumps run dry without damage?

Yes, they can run dry without damage, making them ideal for applications with variable flow or intermittent fluid supply. Unlike centrifugal pumps, which can overheat and fail without liquid, AODD pumps use air pressure to move diaphragms, allowing them to operate safely even when dry. However, while they won’t suffer immediate damage, prolonged dry running can increase diaphragm wear, so regular maintenance checks are recommended.

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DON’T JUST TAKE OUR WORD FOR IT

Crest are very helpful and knowledgeable on different applications; I would recommend Crest Pumps to anyone.

ANDY BRUCEMacduff Shellfish

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Contact us today for your chemical pump solutions that will minimise downtime and maximise energy efficiency.