Pump Basics

What does a pressure pump do?
A pressure pump moves water from your tank or another suitable source to the taps, showers and appliances that need it.
For homes supplied by rainwater tanks, a properly selected pump is central to everyday comfort—from a good shower to reliable water flow when several outlets are running.
Flow and pressure: what’s the difference?
Flow is the amount of water your pump delivers, measured in litres per minute.
Pressure is what pushes that water through your plumbing and out of your taps.
You need both. A pump might deliver plenty of water at low pressure, or achieve high pressure at a low flow rate. The right pump delivers the combination your household needs.
Why choosing the right pump matters
A large shower head, a second bathroom or garden irrigation can place extra demand on your system.
Your pump also needs to suit your water source, pipework and the height difference between the supply and your home. Filtration adds resistance that must be allowed for too.
Choosing a bigger pump isn’t always the answer. Matching the pump to your setup is what matters.
What makes a good pump?
Look beyond the price or country of manufacture. Materials, components, design, manufacturing quality and suitability for the job all contribute to performance and reliability.
Clear technical information and support from your supplier matter too.
At Pump & Purify, we draw on our international technical training and experience supplying New Zealand customers since 2010 to help you choose suitable equipment.
Installation matters too
Even a well-chosen pump needs a suitable installation.
Pipe sizing, suction conditions, airtight connections, controls and protection against running without water can all affect how your system performs.
Use an installer experienced with pumps and follow the manufacturer’s instructions. We can help with product selection and explain the requirements your installer needs to consider.
Does a pump make water safe to drink?
A pressure pump moves water—it does not filter or disinfect it.
Depending on your water source and its quality, you may also need filtration and treatment. Let us know where your water comes from so we can discuss suitable options.
Need a hand?
Whether you’re replacing an existing pump or planning a new system, we can help you work through the options.
Send us details of your water source, household demand and existing setup. Photos and your current pump’s model number are useful too.
Call 09 294 7555 or email sales@pumpandpurify.co.nz.
Great water. Sorted.