Due to the sensitivity of the construction of rotary lobe pumps, solid or abrasive fluids can cause damage to their structure. Due to this characteristic, this type of bomba It has a high maintenance cost, making its operation more expensive and complex.
In this sense, Graco Diaphragm pneumatic pumps that are operated electrically follows a higher cost-benefit and more advantages for the industry.
What are the main disadvantages of rotary lobe pumps?
Rotary lobe pumps can be used in a wide range of applications within industries because of their small conception and ability to act with high temperatures. However, this type of pump has some disadvantages, as we will see below:
Reduced elevation when pumping fine liquids: Fine fluids that are not lubricants may not be quality pumped by this type of equipment. This is because these pumps deal with a small amount of fluid that goes from discharge back to suction, varying according to the level of viscosity of this fluid.
Very high maintenance cost: Rotary lobe pumps contain in their constitution rotary parts that need care and accuracy in its operation, making this pump a very expensive and cost -effective solution for the company. Another problem it has in its structure is the expensive seals that are equally sensitive, facilitating the incidence of leaks.
High Investment: The manufacturing cost of rotary lobe pumps is considerably superior compared to other more efficient solutions in the market. This is because your pieces and structure are complex and sensitive, making your manufacturing cost very high.
It is not the best solution for abrasive fluids: well because of the sensitivity and complexity of their parts, this type of pump is not the ideal solution for industries that need abrasive fluid pumping. This type of component can cause damage to its structure and damage its entire operation.
It cannot work dry: this type of pump cannot work dry for long periods because of damage to its rotors and other parts. As a rule, the fluids being pumped function as a lubricating agent of the rotary lobe pump components.
Why have a pneumatic diaphragm pump?
As pneumatic diaphragm pumps They can provide a more efficient, complete and cost-effective solution. In addition to being able to deal with various types of fluids in a wide range of temperatures, these pumps can also ensure other advantages, such as:
They are self -evident;
Design without sealing that avoids leaks;
Low maintenance cost;
Low pulse;
Pressure stop skills;
It can work dry;
Abrasive fluids;
It can pump down thin low viscosity fluids.
