![]() ![]() In a low-pressure sewer system (LPSS) the piping downstream of the grinder pump will typically be under low pressure, 60psi or less.Ī pump in which the pumping mechanism only can be subjected to immersion in the media. Motors are kept away from media by a sealed barrier. A sewage grinder pump will discharge a finely ground slurry into a small diameter pressure pipe. The second type is the close-coupled submersible, where the motor is connected directly to the pump housing and impeller by a short shaft and is submerged completely inside the basin.Ī mechanical device that shreds solids and raises sewage to a higher elevation through pressure sewers. One is the vertical suspended type where the motor is mounted on the cover of the basin, supported by its shaft connected to the pump housing inside the basin. There are two basic types of ejector pumps. This type of pump is used for liquids that are water-like in viscosity and when quantities of flow are large compared to the pressure requirements.Įjector pumps are sewage handling pumps that are required when wastewater cannot flow to its destination by means of gravity at a velocity of at least 2 ft./s. The velocity of the solution is converted with internal restrictions within the pump into pressure. Agitator pumps deliver kinetic energy to slurry solids surrounding the pump intake, re-suspending them into a fluid state. These solids, which would have otherwise buried and starved the pump of liquid, are pulled into the pump and pushed on through the discharge, keeping the intake clear and free of slurry accumulation.Ĭentrifugal pumps use a rotating impeller to add velocity to the liquid being pumped. Within the pump, the velocity of the liquid is generated by centrifugal force. Used to express the rate at which mechanical energy is expended. Horsepower is the work done at the rate of 550 foot-pounds per second and it is equivalent to 745.7 watts.įor industrial, mining, milling, and power plants or anywhere slurry solids accumulate. These pumps agitate the media around the inlet. Since water always flows to the path of least resistance, a pump without mechanical agitation will only pump the water, leaving the solids behind to accumulate around your pump intake, and eventually starving the pump by blocking the intake. Horsepower (hp) is a unit in the foot-pound-second (fps) or English system. ![]() Size of the pump discharge or outlet connection. The maximum flow the pump is designed to generate. This value is dependent on the system or pressure head the pump must enter. Products returned as matches will meet all specified criteria. User may specify either, both, or neither of the "At Least" and "No More Than" values. ![]() The maximum pressure the pump is designed to generate. ![]()
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