What is free passage and why is it important?
What is the recommended upper limit for particle size when using semi-open impellers?
What is the recommended free passage for municipal sewage applications?
What is greywater?
Test results
Congratulations. You have passed the test and completed the 57 - Wastewater handling with the UNILIFT range
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Q: What is free passage and why is it important?
A: Free passage is used only to define the type of wastewater by particle or solids size and has no impact as such on the pump hydraulics
Q: What is free passage and why is it important?
A: Free passage is another way of describing input or output pipe diameter
Q: What is free passage and why is it important?
A: Free passage describes the particle or solids size that can pass freely through the pump hydraulics and is important to avoid clogging in the pump
Q: What is the recommended upper limit for particle size when using semi-open impellers?
A: Up to 35 mm
Q: What is the recommended upper limit for particle size when using semi-open impellers?
A: Up to 50 mm
Q: What is the recommended upper limit for particle size when using semi-open impellers?
A: Up to 12 mm
Q: What is the recommended free passage for municipal sewage applications?
A: Minimum 35 mm
Q: What is the recommended free passage for municipal sewage applications?
A: Minimum 80 mm
Q: What is the recommended free passage for municipal sewage applications?
A: Minimum 12 mm
Q: What is greywater?
A: Untreated wastewater from wash basins, showers, floor drains and appliances containing fibres and solids no larger than 10 or 35 mm
Q: What is greywater?
A: Sewage mixed with rainwater, collected groundwater and other raw water with solids up to 80mm
Q: What is greywater?
A: Rainwater – it looks grey when it flows on built up surfaces