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Technical support, case histories, installation and maintenance of GemmeCotti pumps.


Pressure vs head, what is the difference?

The pump selection of a pump is driven by the following main parameters: – Head (H) – Flow rate (Q) – Fluid characteristics (ρ, γ, T ….) Sometimes head can be confused with pressure during pump choice. As a matter of fact there...
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How to read a pump curve

If you are new in the pump field, reading a pump performance curve (usually just called “pump curve”) can be difficult and sometimes confusing. That’s why we want to help you by offering a simple guide for a first approach...
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Video: how to assemble and disassemble magnetic drive turbine pump HTT

Here is the new GemmeCotti video tutorial: how to assemble and disassemble magnetic drive turbine pump series HTT PP/PVDF. Enjoy! MAIN FEATURES OF PUMPS HTT PP/PVDF: Magnetic drive regenerative turbine pumps series HTT are made of thermoplastic non-metallic materials (polypropylene-PP...
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Mag drive pump HTM 31 PP/PVDF now suitable for 4kw

Sealless Magnetic Drive pumps model HTM 31 PP/PVDF are now suitable also for 4 KW motor size 112. This pump model can be coupled to three different motor sizes: SIZE 90 – 2,2KW SIZE 100 – 3KW new SIZE 112 – 4...
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How can you prevent dry running of pumps? 

One of the main reasons of pump damage is the dry running due to functioning without liquid, so it is important to pay attention and never let a pump operate without liquid inside. Moreover, if you think about it, the main purpose...
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How does a mag drive rotary vane pump work?

In a magnetic drive rotary vane pump two pumps design are combined together: the sealless magnetic coupling and the positive displacement system with vanes. With the magnetic coupling the torque is transmitted through contactless magnetic forces from the external magnet which is coupled...
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Video: how to assemble and disassemble metallic mag drive pump series HTM SS316

Here is the new GemmeCotti video tutorial: how to assemble and disassemble mag drive pump HTM SS316. MAIN FEATURES OF MAG DRIVE PUMPS HTM SS316 Mag drive centrifugal pumps model HTM SS316  are seal less pumps suitable to pump hydrocarbons, solvents...
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Video: how to assemble and disassemble mag drive centrifugal pump HTM PP/PVDF

Here is the new GemmeCotti video tutorial: how to assemble and disassemble mag drive centrifugal pump HTM PP/PVDF. Click here or on the image below to watch the video   MAIN FEATURES OF MAG DRIVE PUMPS HTM PP/PVDF Mag drive...
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5 things to keep in mind when installing a pump

The pump is generally part of a hydraulic system that can include a various number of components such as valves, fittings, filters, expansion joints, instruments, etc. The way the piping is arranged and the position of the components has a...
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How can you install a pump perfectly horizontal?

When installing a chemical pump with motor configuration B3/B5 in a plant it’s really difficult to maintain it perfectly horizontal because of the heavier weight of the pump with respect to the motor and/or the form of the motor flange which doesn’t allow...
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