A circulator pump or circulating pump is a specific type of pump used to circulate gases, liquids, or slurries in a closed circuit. They are commonly found circulating water in a hydronic heating or cooling system.Because they only circulate liquid within a closed circuit, they only need to overcome the friction of a piping system (as opposed to lifting a fluid from a point of lower potential energy to a point of higher potential energy).

A pump is a device that moves fluids (liquids or gases). Pumps can be classified into three major groups according to the method they use to move the fluid: direct lift, displacement, and gravity pumps.[1] Pumps operate by some mechanism (typically reciprocating or rotary), and consume energy to perform mechanical work moving the fluid. Pumps operate via many energy sources, including manual operation, electricity, engines, or wind power, and come in many sizes, from microscopic for use in medical applications, to large industrial pumps.

Surface pumps should be mounted in dry, weatherproof locations or housings as close to the water source as practical. Unlike our submersible well pumps, they should not be submerged or allowed to freeze. Make sure to drain your surface pump system before freezing weather sets in! For help with any solar water pumping system, call our Tech Desk at 800-919-2400 or use our solar water pumping system quote tool.

A submersible pump (or sub pump, electric submersible pump (ESP)) is a device which has a hermetically sealed motor close-coupled to the pump body. The whole assembly is submerged in the fluid to be pumped. The main advantage of this type of pump is that it prevents pump cavitation, a problem associated with a high elevation difference between the pump and the fluid surface. Submersible pumps push fluid to the surface, rather than jet pumps, which create a vacuum and rely upon atmospheric pressure. Submersibles use pressurized fluid from the surface to drive a hydraulic motor downhole, rather than an electric motor, and are used in heavy oil applications with heated water as the motive fluid.

Submersible borehole pumps are a type of submersible pump. They are centrifugal pumps driven by a submersible motor. As they usually draw in the fluid directly without a suction line, they must constantly be submerged in the fluid handled. Submersible borehole pumps are designed as single-stage or multistage pumps which are rigidly coupled to the submersible motor. The motor can be arranged on top or underneath the pump, depending on the application.

A garden water pump is self-priming and often used for spraying a garden or lawn. A wide variety of water can be used, ranging from tap water to groundwater, and from pond to ditch water. A garden water pump is self-priming and often used for spraying a garden or lawn. A wide variety of water can be used, ranging from tap water to groundwater, and from pond to ditch water.