Common Mistakes When Installing Shallow Well Jet Pumps?

Choosing the Right Well Casing Depth

When installing shallow well jet pumps, it’s essential to select the correct well casing depth. The well casing should be at least 6 inches deeper than the pump’s jet assembly to ensure adequate water column and prevent airlock issues. A well casing depth that is too shallow can lead to reduced pump performance and increased risk of cavitation.

Proper Piping Sizing and Installation

Proper piping sizing and installation are crucial for efficient shallow well jet pump operation. A minimum of 1.5 inches of pipe diameter is recommended for most shallow well jet pumps, with 2 inches being the preferred minimum for larger systems. Additionally, pipes should be sized to match the pump’s flow rate to prevent excessive pressure drop and reduced pump performance. When installing pipes, it’s essential to ensure that they are properly supported and secured to prevent kinking or damage.

Pump Sizing and Selection

Proper pump sizing and selection are critical for efficient shallow well jet pump operation. A general rule of thumb is to select a pump that can deliver at least 2 gallons per minute (gpm) for every 10 feet of well depth. For example, a 20-foot well would require a pump capable of delivering at least 4 gpm. Additionally, the pump’s horsepower should be selected based on the system’s total dynamic head (TDH), which takes into account the well depth, pipe friction losses, and other system components.