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equirements for a pump/household
water system:
- Pipework designed to specifications (refer to pump performance
curves), low power consumption
- High efficiency in internal pump design
- Consistent use of high-quality, corrosive-resistant materials
throughout high-quality bearings, ease of maintenance
- Operation without diaphragm pressure vessels by use of alternative
pressure system controls
- Quiet-running, low-noise (multiple-stage pumps) and sound insulated
with flexible connections to the pipework
- Proper installation of the pump with "run dry" protection
- No large spaces filled with water to the exclusion of oxygen,
e.g. pressure diaphragm vessels in the system
- Low suction height for suction pumps and a short, airtight,
suction feed pipe
- Floating suction system for submersible pumps (pdf
file
 )
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There are different types of pumps according to the
system used. In most cases the best types are multiple submersible
pumps (advantage: no suction problems), or self-priming, multiple
stage, rotary pumps, both with automatic pressure regulator. The
pump and the pipework system are handled with care by the choice
of a starting and final pressure that is adapted to the requirements.
In any case, only high-quality products should be used; beware of
cheap imitations.
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