Jensen Precast ‘Pumps’ It Up

Jensen Water Resources performs startup services on a large pump station installation

The Roman Empire famously tapped the force of gravity to move water from hillsides to city centers across aqueducts. Today we can leverage pump stations to do most of the heavy lifting and move water to wherever we want it to be. Pump stations move stormwater, wastewater, and other media for America’s infrastructure needs. Engineers […]

Pump Stations: Wet Well Diameter

Once we have determined our hatch dimensions, we can then size the diameter of the wet well. As an example, let’s assume that we have sized a minimum hatch 4′ long by 5′ wide. It might seem logical that a 6′ inside diameter manhole would work. This would be incorrect as it does not account […]

Pump Station Impellers

Selection of the proper type of impeller for your application can have a significant bearing on the applications ultimate success. We desire high efficiency but also need good reliability and a minimal amount of ongoing maintenance. All of these considerations come into play when selecting the right impeller style. Non-clog Impellers Often in the sewage […]

Pump Stations: Pump Curves

Reading and understanding centrifugal pump curves is the key to proper pump selection and more importantly reliable, efficient, pump applications. There are four important curves shown on the standard performance curve from the manufacturer. They are listed below and shown on the manufacturers curve see (figure 4). a. Head b. Efficiency c. Power d. Net […]

Pump Stations: Hatch Sizing

So we now know what the minimum volume of the wet well should be to handle all inflowrates. We now need to select our wet well shape and size. This is an iterative process. A good place to start is by sizing the minimum hatch dimensions as this sets the minimum well diameter. First determine the […]

Electric Pump Motors

When selecting an electric motor for a pump station, it is important to choose one that can develop enough horsepower to drive the pump. Often motors are selected to be non-overloading at the end of curve. This means that even at the maximum power requirement for the pump, the motor is large enough to drive […]

Pump Control

Many control options are available to system designers these days. We will discuss soft starts, variable-frequency drives, and multiple pump systems. Soft starters reduce the current inrush and therefore the startup torque for electric motor drives. The reduced torque and current help increase the life and reliability of the pump and motor and system components. […]

Pump Stations: Importance of a System Curve

Pump selection is often a confusing issue. Many engineers and system designers think of pumps like light bulbs; you plug them in, and they work. This often leads to operation and maintenance problems that can easily be avoided. Often when engineers are working on the design of a fluid system, one of the hardest tasks […]

Homa Pump Technology

Jensen Engineered Systems has submersible pumps for all types of water & wastewater applications for submersible package pump stations and lift stations. Our wide hydraulic capabilities (along with an extensive product line including grinder, chopper, non-clog, submersible, and dry pit pumps) allows Jensen Engineered Systems to aid in the selection to find the most efficient […]

Pump Station Wet Wells: Minimum Storage Volume

The following discussion concerning wet well sizing is based upon the assumption of a low flow system, which is less than 3000 gpm.  Systems with flows larger than 3000 gpm require additional considerations to be taken into account. The design criteria that needs to be identified first is the total system inflow rate, and the […]