Best pressure pumps for water tanks

March 18, 2026

Best Pressure Pumps for Water Tanks

Choosing the right pressure pump for your water tank is essential for reliable water delivery throughout your home, garden, or agricultural property. Whether you use rainwater for toilets, laundry, irrigation or whole-of-home supply, the correct pressure pump ensures consistent water flow and pressure when you need it most.

This guide explains what pressure pumps are, how they work with water tanks, what features to look for, and some of the best pressure pump options currently available to pair with your water tank system.

What Is a Pressure Pump?

A pressure pump is a mechanical device that increases water pressure from a storage tank so that water flows consistently through taps, showers, appliances and irrigation systems. Without a pressure pump, water from a tank may trickle rather than flow with sufficient strength, especially if the water outlet is elevated or a long distance from the tank.

A pressure pump system typically includes:

  • A pump unit

  • A pressure switch or controller

  • Piping and fittings to connect to the tank and outlets

At Polymaster, water tanks are designed with compatible pump connections to make installation of a pressure pump straightforward and practical for any property.

Why Use a Pressure Pump With Your Water Tank

Installing a pressure pump is valuable when:

  • Water needs to be supplied to taps, toilets, showers and appliances

  • You want even, consistent pressure throughout a property

  • The tank is below the house or at a lower elevation

  • Multiple taps may be used at the same time

Good pressure pumps help avoid weak showers, slow filling toilets, or appliances that operate poorly due to low water pressure. They deliver water at a flow and pressure suitable for everyday domestic use.

Water tank pump

Types of Pressure Pumps for Water Tanks

Submersible Pumps

Submersible pressure pumps are installed inside the water tank and push water upward. They are typically quieter and more efficient because they draw water directly from within the tank. Polymaster offers submersible pump and pressure control options designed for this purpose.

External (Surface) Pumps

External pumps sit above ground and draw water from the tank through suction hoses. These are easier to access for maintenance and are suitable if the tank is close to the house or shed.

Booster and Pressure Booster Pumps

Booster pumps increase the existing pressure in a system, often working with rainwater tanks to supply adequate pressure for household requirements and irrigation.

Key Features to Look for in a Pressure Pump

When selecting a pressure pump for your water tank, consider:

  • Pressure rating: Good household systems generally operate around 300 kPa or more for strong flow.

  • Flow rate: Measured in litres per minute; higher flow rates support multi-tap use.

  • Dry run protection: Prevents damage if the tank runs low.

  • Automatic pressure control: Starts the pump when a tap is opened and stops it when water demand falls.

  • Durability: UV resistance and corrosion-resistant parts matter in Australian conditions.

Best Pressure Pumps for Water Tanks (Available Options)

Below are some recommended pressure pumps suitable for water tanks, ranging from basic pressure units to more powerful home systems.

Davey Water Pump – Automatic Home Pressure Pump

A well-rounded pressure pump for residential rainwater tank use. It provides consistent pressure for household taps and includes features like automatic cut-off and stable flow. Great choice for whole-of-home applications.

Grundfos CM Basic Pressure Pump

Premium quality pressure pump from a trusted brand. Offers excellent reliability, strong pressure delivery, and robust construction. Ideal for larger homes or properties with higher water demand.

Bianco multi54nxtp Pro Pressure Pump

Professional-grade pressure pump with proven performance. Suitable for demanding domestic or light commercial use where stable pressure and durability are priorities.

DAB 82MP Cast Iron Jet Pump

Heavy-duty jet pump with built-in pressure switch and robust cast iron design. Excellent for applications that require reliable pressure boosting and longevity.

Hyjet 800W Water Tank Pump

A strong mid-range water tank pump with great performance for residential and garden use. Good balance of flow rate, pressure and value.

Jet Pressure Pump 53L/M

A solid mid-range jet pressure pump with reasonable flow and pressure capabilities. Suitable for garden irrigation or smaller domestic use.

Industek INP900 1.2HP Home Booster Pump

A higher-power booster pump for larger properties or applications requiring greater flow. Good option where multiple taps and appliances operate simultaneously.

ClayTech C3X Rainwater Pressure Pump

Automatic pressure pump designed specifically for rainwater tanks. Provides reliable pressure control with user-friendly performance for everyday use.

How to Choose the Right Pressure Pump for Your Tank

Match Pressure to Your Demand

Consider the number of taps and appliances you plan to run. Larger homes or multi-tap demands generally require pumps with higher flow and pressure ratings.

Check Compatibility With Your Tank

Ensure the pump can be connected easily with your tank outlets and piping. Polymaster water tanks include fittings designed to integrate with common tank pumps.

Consider Installation and Support

Professional installation is often recommended for pressure pump systems, especially if integrated with whole-of-home plumbing.

Maintenance and Longevity

Choose pumps with features like dry-run protection, sealed motors and reliable pressure controllers to reduce service needs and extend lifespan.

Pressure Pumps and Australian Conditions

Australian homes and properties face:

  • High UV exposure

  • Variable weather

  • Different roof and plumbing setups

A pump designed and tested for local conditions will outperform generic solutions and deliver better reliability over time.

Installation Basics

Most pressure pump installations involve:

  • Mounting the pump near the tank or in a pump box

  • Connecting suction lines to the tank outlet

  • Installing a pressure controller switch

  • Wiring to a 230 V power supply (or other rated power source)

Always follow manufacturer specifications and local plumbing codes for installation. If you’re unsure, consult a licensed plumber or pump installer.

Maintaining Your Pressure Pump System

To keep your pressure pump operating well:

  • Inspect pressure switch and fittings annually

  • Check for leaks in hoses and connections

  • Clean inlet screens regularly

  • Ensure the pump area stays dry and ventilated

Proper maintenance improves performance and extends the life of the pump.

Final Thoughts

A quality pressure pump paired with your water tank transforms stored water into reliable, usable supply for your household, garden or property. From smaller garden pumps to robust household pressure units, the right choice depends on your water usage, property size and desired flow pressure.

Investing in a pressure pump that suits your needs ensures consistent water delivery, better appliance performance, and greater household convenience.