For the movement of highly viscous and thick mud, silt or dredging, settled tails pumps are used widely across the globe due to its unique features. They are generally positive displacement type of device is designed in such a way so that it lessens the amount of water with the removal of mud making it thicker. Moreover, it is having a cleaner action as compared to other same type of advanced devices. This hydraulically operated machine consists of two feed augers, twin pistons and a system which prevents solids from entering the internal piping system. Depending upon the situation, it can be attached to an excavator arm or can be mounted off a crane. Available in both electric and diesel version, it is able to move the fluid at high pressure and high rate. For the underground mining for the mine de-sludging, backfill, dewatering, hydraulic ore hoisting, mineral processing, power industries, pipeline transportation, waste treatment and sewage tailings disposal pumps are used across countries which consist of hydraulically operated double pistons. This machine is able to operate at very high discharge pressures. Moreover, they are capable of generating constant flow irrespective of discharge line pressure. They can move the concentrated solids and slurries.
For construction projects, trailer pumps mainly get used as they can be towed to the actual location depending upon the need of the situation. They are mainly used in distribution of concrete over a large distance or through a boom. This easier to maintain and use device is having remote control, automatic greasing and inner water pump apart from flexible set of steel hoses attached at the outlet of the system. The most striking feature is reaching out to the actual place where it is needed the most regardless of the height or distance for the shotcrete, commercial slabs, decks etc. in multi-story buildings.