DESMI Rotan Gear Pump  Frequently Asked Questions

Are the ROTAN® pumps the same size as other competing brands?

not necessarily. If the product of a competing brand is a copy of ROTAN®, we can 

provide "authentic". In addition, the space left by the original pump will be very 

close to the size of the genuine ROTAN® pump, so that our pump can be installed 

in the original pump position very "just right", so that the current equipment installation 

position can be continued to be used.

Are ROTAN® accessories available for use with other brands of pumps?

No, the accessories of ROTAN® pumps are not interchangeable with pumps of other 

brands. Unless another brand of pump is "cloned" the ROTAN® pump design.

What is the direction of the pump?

The working direction of all ROTAN® pumps is bidirectional and depends on the 

direction of the driving motor when used. Looking at the tail of the pump shaft, if it

 is running clockwise, it is right-to-left-out, and vice versa. When necessary, the bypass 

valve needs to be adjusted, so the part contains a spring on the side close to the suction port.

Are ROTAN® pumps self-priming?

Yes, ROTAN® has excellent self-priming capabilities. When the pump needs to operate 

under low suction conditions, it is usually necessary to calculate the NPSH data during

 the selection process to obtain a suitable solution.

How long can the ROTAN® pump last?

This depends to a large extent on the working environment of the pump and the configuration 

of the pump that was initially selected. According to market feedback, the ROTAN® pump 

can have a maintenance-free service life of up to 30 years when used to convey media such 

as lubricant. On the other hand, some pumps have relatively difficult operating conditions

 (i.e., in high pressure environments containing more particles), and these pumps often 

require a thorough overhaul every few weeks.

What is the maximum pressure?

Re-examination is determined by multiple parameters. Generally speaking, ROTAN® pumps

 can withstand system pressures up to 500 PSI and differential pressures of 300 PSI.