Difference Between Positive And Negative Shower Pumps

For example this would be the ideal pump to use when the shower is located in a loft conversion.

Difference between positive and negative shower pumps. A loft conversion a negative pump is needed. What s the difference between a positive shower pump and a negative shower pump. 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.

What is the difference between positive and negative head. A positive head pump is designed to be fed by gravity. It therefore needs a distance known as a head of at least a metre three feet three inches between the bottom of the cold water cistern and the pump.

If the shower head is higher than the water tank e g. Click here for further information. A positive head pump will work in a positive head system and a universal pump will work in either.

The gravity feed serves to kick start the pump which then pushes water to the shower. This is because it relies on a gravity feed of water to kick start the impellers and start pumping hot and cold water.