Quick Answer
Head pressure specifications for livestock watering systems typically range from 50 to 150 pounds per square inch (PSI), but can be as low as 25 PSI or as high as 250 PSI depending on the system requirements and well depth.
Pump Selection Criteria
When selecting a deep well pump for a livestock watering system, the head pressure specification must match the system’s requirements. For example, a well with a depth of 200 feet and a total dynamic head (TDH) of 250 feet requires a pump with a head rating of at least 250 PSI. The TDH is calculated by adding the static head (the depth of the well) to the friction head (the pressure loss due to the length and diameter of the piping).
Pressure Regulation
To ensure a stable and consistent water pressure, it is essential to install a pressure regulation system. This system typically consists of a pressure tank, a pressure switch, and a relief valve. The pressure tank stores excess water pressure, and the pressure switch turns the pump on and off based on the system’s demand. The relief valve protects the system from over-pressurization. A common pressure regulation system for livestock watering systems has a setting between 40 to 60 PSI, which allows for a safe and efficient water pressure.
System Design Considerations
The system design must also consider the flow rate required to meet the livestock watering needs. A general rule of thumb is to provide 1 gallon per minute (GPM) of water per 100 head of livestock. For example, a 100-head cattle operation may require a flow rate of 1 GPM. The system design should also consider the piping material, size, and slope to ensure a smooth and efficient water flow. A minimum pipe slope of 1% is recommended to prevent airlocks and ensure proper water flow.
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