Pumps with a metal casing may cost up to double the price of a similar pump without the casing. For instance, the price of a Â½-horsepower stainless steel or brass core pedestal pumps can run between $280 and $500.
A shower pump is an electric pump that is used to maintain a steady flow and pressure of water in a shower. The pump works best on stored water as compared to water that comes directly from the mains. With a shower pump, the fear of water suddenly stopping when you are taking a shower is eliminated.
First, its mechanical action creates a vacuum at the pump inlet which allows atmospheric pressure to force liquid from the reservoir into the inlet line to the pump. Second, its mechanical action delivers this liquid to the pump outlet and forces it into the hydraulic system. A pump produces liquid movement or flow: it does not generate pressure. It produces the flow necessary for the development of pressure which is a function of resistance to fluid flow in the system.