VerderHUS Screw Centrifugal Pumps

WORKING PRINCIPLE

The Verderhus screw centrifugal pump operates a hybrid principle of both a centrifugal and positive displacement action. This hybrid pumping principle is possible due to the screw centrifugal impeller and cone assembly - unique to the screw centrifugal pump product category.

The contour and shape of the impeller produces compression, like a positive displacement pump. The principle of the pump is combined with an open screw to allow easy passage of large solids. Towards the discharge end of the impeller the diameter increases and the channel contour steepens - this ensures the velocity of the fluid is increased, generating centrifugal force.

The shape of the cone matches the impeller’s increasing screw diameter, which provides tolerance to achieve efficiencies as high as 70%.

FAQs

Where do you deliver and what is your estimated shipping times?

Global Pumps understand how crucial your pumping system is. Therefore, we strive to provide speedy delivery to your site. We offer delivery Australia-wide.

The following table provides a guideline for estimated shipping timeframes.

Locations	Shipping Time Range
Melbourne	1-2 Days
Sydney	2-3 Days
Brisbane	2-4 Days
Perth	2-4 Days
Adelaide	1 Day
Kalgoorlie	3-5 Days
Mt Isa	3-5 Days

PRODUCT INFORMATION

Global Pumps offer the wide range of Verderhus Screw Centrifugal Pumps. These pumps combine the best features of the centrifugal and positive displacement pump to define a new standard for low head, high flow pumping.

The Verderhus design offers abrasion resistance for applications were large solids require pumping. This screw centrifugal pump can handle solids to <10% sludge and <30% slurry, as well as viscosities to 3000 cps. Its large clearance enables product to move through the pump change and efficiently transfer into the discharge line.

The range of Verderhus pumps are fitted with premium efficiency IE3 motors, which lowers both energy use and ownership costs. They also feature the following:

adjustable impeller for long-term efficiency
constant power as viscosity changes
gentle pumping action avoids flocculent damage, reduces emulsification and foaming
pumps long fibred fluids
high viscous pumping
wear protection

Reach pressures of 16 bar and/or flow rates of 150 m³/hr
No valves or seals in contact with process fluid
Chemically resistance flange connections available
Tough mechanical seal gearbox protection
Low pulse design to provide gentle pumping action for shear sensitive flocculants and to increase viability of sensitive bacteria
Verderflex hoses are the longest life hoses – their life does not depend on the abrasiveness of the process fluid (e.g. lime or Silicon Carbide pastes)
Process fluid is completely contained within the pump in the event of a burst hose
Can handle process fluids with high specific gravity and fluids that contain gas
No “vapour” lock problems
Advanced design means accurate and repeatable dosing

NOT SURE WHERE TO START

Guide to Selecting the Best Pump

If you need some guidance on how to select the right pump then you’re not alone! There’s such a wide range of pumps in Australia, from centrifugal pumps to hose pumps to diaphragm pumps. The options available to you can make it a difficult choice, so we’ve created this special guide to help step you through the process of selecting the ideal pump for your requirements.

Download

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SCREW CENTRIFUGAL PUMPS

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NOT SURE WHERE TO START

Guide to Selecting the Best Pump

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