Difference Between Positive And Negative Shower Pumps

Positive head shower pump this type of pump needs a minimum head of at least 3ft 3ins 990mm between the base of the cistern and the shower head.

Difference between positive and negative shower pumps. A negative pump works by drawing water from the tank to the shower and is the best choice for when the shower head is at the same level or higher than the water tank. If the shower head is higher than the water tank e g. In simple terms if your shower head is positioned lower than your cold water storage tank you can use a positive shower pump.

The gravity feed serves to kick start the pump which then pushes water to the shower. A loft conversion a negative pump is needed. What s the difference between a positive shower pump and a negative shower pump.

For example this would be the ideal pump to use when the shower is located in a loft conversion. Click here for further information. What is the difference between positive and negative head.

A positive head pump is designed to be fed by gravity. This is because it relies on a gravity feed of water to kick start the impellers and start pumping hot and cold water.