Trash pumps are designed to deal with waste water. There are three types of trash pumps: Semi Trash Pump, Diaphragm and Trash. The waste water which these pumps receive is most likely to contain some form of particles or debris at a high concentration inside of it and the pumps needs to be designed to allow these particles to move through it without blocking.
A Trash pump is designed to take the larger materials some as large as 3 inches or 76mm, the semi trash pump will handle smaller items and the diaphragm will only handle abrasive sludge liquids. A trash pump will require more frequent maintenance and monitoring as it is more susceptible to problems due to the nature of its use. Majority of these pumps will be fitted with a filtration screen to monitor the size of particles going into the pump to avoid failure and a fault alarm whether it be visual or audible or a combination of both will be installed. See also our page on cutting and grinding pumps.