Question 1 of 3
Basic

What is free passage and why is it important?

Question 2 of 3
Basic

How is untreated wastewater including toilet discharge inside buildings with solids no larger than 50 mm defined in the module?

Question 3 of 3
Basic

What is the recommended upper limit for particle size when using semi-open impellers?

Question 3 of 3
Basic

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1: What is free passage and why is it important?
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
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1: What is free passage and why is it important?
Free passage is another way of describing input or output pipe diameter
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1: What is free passage and why is it important?
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
2: How is untreated wastewater including toilet discharge inside buildings with solids no larger than 50 mm defined in the module?
As blackwater
2: How is untreated wastewater including toilet discharge inside buildings with solids no larger than 50 mm defined in the module?
As sewage
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2: How is untreated wastewater including toilet discharge inside buildings with solids no larger than 50 mm defined in the module?
As brown water
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3: What is the recommended upper limit for particle size when using semi-open impellers?
Up to 35 mm
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3: What is the recommended upper limit for particle size when using semi-open impellers?
Up to 50 mm
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3: What is the recommended upper limit for particle size when using semi-open impellers?
Up to 12 mm