Well Pump Head Pressure

The relationship between head and pressure can be characterized by the following formula.

Well pump head pressure.

Total dynamic head tdh. Where p pressure psi h head ft. Conversely if the pump is located above the water to be pumped then the suction head is positive and the pump head will decrease. Whether you re pumping water or a heavy caustic solution the head achieved will be the same.

Or the pressure that is required for an application if a pressure tank is not used e g. When a pump is started up with an open valve there is initially little system head pressure acting in opposition to the pump head capacity curve. The discharge pressure of the pump should be approximately equivalent to the total dynamic head tdh required by the system tanks pipes elbows valves flanges and fittings. To monitor and control your pump your pump should have a suction pressure gauge and a discharge pressure gauge installed on the pump.

Given the lower system head the intersection of the h q curve with the system head curve is out towards the right end of the h q curve at or near runout. The pressure at the discharge of the pump however will be higher for the heavier solution. If the water level is higher than the pump then the suction head is negative and pump head will increase. In this study it was decided to apply inner liner diameters of about 8 9 cm 3 and.

A direct driven sprinkler system. This is because the water entering the pump applies additional pressure at the suction.