80mm Vortex Vs Grinder Submersible Pump
- Wednesday 8th October 2014, 2:00pm
When considering the right pump for each application, it is essential to fully understand site conditions, duty requirements and nature of inflow. At All Purpose Pumps we provide expert advice to ensure the most effective pumps are specified.
A common question we are asked is:
Both pump types are frequently used in sewerage pump stations, however it is important to note that grinder pumps are more prone to blockage if there is too much fibrous and solid material present in the sewage. Grinder pumps are typically used for low flow applications up to 5 litres per second. Vortex pumps are typically used in applications when pump blockages are to be minimised/eliminated or there is a higher sewage inflow rate. This is achieved through the HYFLOW Pumps recessed impeller design, which is capable of allowing an 80mm free passage of solids to easily handle sewage containing large amounts of fibrous materials and solids.
The images below show:
- A Submersible Grinder pump that has become blocked due to too much toilet paper clogging the impeller and grinder mechanism
- An example of a pump station with a high level of solid and fibrous materials (this can be easily managed with a Vortex pump, the encrustation can also be cleared with a Submersible Mixer)
- A small HYFLOW Pump (HV.50.075.3.2) Vortex pump cut-away showing the large space in between casing and impeller to handle large solids without blocking
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