Self-priming Pump

A: The pump is usually installed above or adjacent to the tank it will be transferring from. After all piping connections have been made, the casing is then filled with enough liquid to cover the impeller, enabling the pump to prime by separating air and fluid within the casing.

A: They can sometimes be required when there are long suction lines or there is a long vertical priming line. They can interfere with normal operation of the pump adding unnecessary friction losses, or cause issues with the eliminating of air if placed elsewhere in the system such as on the pump discharge.

A: Units can take anywhere between 90seconds or less to a couple of minutes to prime depending on length of pipework, and amount of air present in suction pipework.

A: Monoblock or compact versions are usually used for shorter intermittent duties or applications. Long coupled versions are used in more heavy duty applications where units may be operated continuously, or under heavy process conditions.

A: Self-Priming means the pump can be located above a fluid, and draw fluid into the pump without issue. There are various types of self-priming pumps utilizing different technologies which are selected based on the fluid being pumped, its viscosity, temperature, presence of solids, hours of operation and process conditions.

A: Due to the casing design, a certain amount of fluid always remains in the pump when the unit is not in operation. This means the pump can run dry without fluid for a limited amount of time – typically 30 minutes.

A: Yes, this pump can be installed in a dry area above the sump if the suction lift height does not exceed 8m. A surface mounted pump has many benefits over a submersible pump, one main benefit being that it is easier the access and maintain the pump.

A: Self-priming pumps are a specific type of liquid pump designed to have the required liquid inside the cavity or pump body necessary to start the pumping process. This offers the potential for increased operating efficiencies in process plants where pumps are used for a variety of repeated yet intermittent operations.

A: Many pumps on the market are self-priming. These pumps use an automatic priming process when set up, and generally don't need to be subsequently primed.

A: There is also no need to have a foot valve in the system as the primary unit is always capable of lifting the process fluid to the pump regardless of the air in the system and the pump will only start when properly primed.