Well Pump Head Pressure

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.

Well pump head pressure.

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. Whether you re pumping water or a heavy caustic solution the head achieved will be the same. The relationship between head and pressure can be characterized by the following formula. A direct driven sprinkler system.

This is because the pump must use energy to bring the water to the level of the pump. 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. Where p pressure psi h head ft. If the water level is higher than the pump then the suction head is negative and pump head will increase.

Total dynamic head tdh. This is because the water entering the pump applies additional pressure at the suction. Or the pressure that is required for an application if a pressure tank is not used e g. To monitor and control your pump your pump should have a suction pressure gauge and a discharge pressure gauge installed on the pump.

The pressure at the discharge of the pump however will be higher for the heavier solution. The average pressure in a domestic water system with a pressure tank used.