5 Essential points to look for while selecting a centrifugal pump

Selecting the right pump for industrial purpose requires the buyers to focus on some important factors along with making a deep research on the kinds of pump available. Choosing the right pump for right job extends the durability of the pumps with making the whole process cost effective and more efficient which are the most important factors in industrial applications. Hence we have pumps like Kirloskar submersible pumps,Split casing centrifugal pumps, Multistage centrifugal pump, Vertical multistage pumps, etc. for better functioning at your industrial plants & sites.

Few of the important factors that can’t be overlooked while purchasing a pump are explained to guide the buyers.

  1. Liquid properties:

The first and foremost point to consider is the type of liquid for which the pump is intended. The liquid has a big role to play in the pump selection process. All the properties of the liquid such as temperature, specific gravity, viscosity, vapor pressure, PH value etc. is to be known before going ahead for the pump selection and buying decision. Doing so helps in selecting the best combination of pump suitable for that specific application or liquid.

  1. Operating condition:

The selection of the right pump depends highly on the operating conditions or environment in which it has to work. While pump is to be installed then whether the pump will be running continuously for all the time or just as per the requirement needs to be analyzed while selecting a pump. Also the temperature, altitude, atmospheric pressure and location of the pump are also important factors to be looked at while selection.

  1. Efficiency rating:

Efficiency rating is a key point to consider when it comes to choose the appropriate pump for a specified job. Pump consumes huge amount of energy than anything else. So, it is advised to select the best energy efficient pump as it saves huge money on the bill. The pump should be selected in the zone of 50% left of BEP(Best Efficiency Point) and 120% to the right of the BEP point on the curve.

  1. Net Positive suction head:

NPSH can be defined as two parts: NPSH Available (NPSHA): The absolute pressure at the suction port of the pump and NPSH Required (NPSHR): The minimum pressure required at the suction port of the pump to keep the pump from cavitating.

NPSHA is a function of your system and must be calculated, whereas NPSHR is a function of the pump and must be provided by the pump manufacturer. NPSHA must be greater than NPSHR for the pump system to operate without cavitating. Put another way, you must have more suction side pressure available than the pump requires.

  1. Power Rating:

The pump is driven by the prime mover i.e Motor or Engine .The power required to pump liquid from one place to other is very important and needs to be checked very carefully as it will affect the overall operating cost of the system .It is very crucial to check whether the power rating for the pump is at the optimum level to handle the load and not create any problem in future.