Introduction
Pressure tanks are an essential part of domestic water pump systems in South Africa. Whether you’re running a booster pump, a borehole pump, or a rainwater harvesting setup, a good-quality pressure tank (also called a pressure vessel) ensures consistent water pressure and protects your pump from unnecessary wear.
By storing water under pressure, these tanks reduce how often the pump switches on and off. This saves electricity, extends pump life, and gives you reliable water supply for showers, taps, and household appliances.
At Pumps Africa & Tools, we supply a wide range of pressure tanks in South Africa, including top brands like Varem and Aquafos, and we can give expert advice to help you select the correct tank for your system.
What are the applications of pressure tanks?
Pressure tanks are used across different domestic and small-scale water systems:
- Booster pump tanks: Keep water pressure steady in homes that rely on municipal or tank-fed supply.
- Borehole pressure vessels: Ensure smooth water delivery from underground sources.
- Rainwater harvesting systems: Store and deliver pressurised water for household or irrigation use.
- Irrigation systems: Maintain reliable pressure for sprinklers and drip irrigation lines.
How do I determine the correct size pressure tank?
The correct size depends on the kW size of your pump and your household water demand. A larger tank provides more stored water, reduces pump cycling, and offers smoother operation. A tank that’s too small can cause the pump to switch on too frequently, leading to wear and higher running costs.
Which brands are best?
For South African conditions, trusted pressure vessel brands include:
- Varem Pressure Tanks – Italian quality, long-lasting diaphragms.
- Vega Pressure Tanks – Affordable, reliable, and built for local use.
- Global Water Solutions – Durable tanks designed for household and farm systems.
Pressure Tank Size vs Pump Size Table
| Pump Power (kW) | Recommended Tank Size (Litres) | Typical Application |
|---|---|---|
| 0.37 – 0.55 kW | 24 L – 50 L | Small homes, 1 bathroom |
| 0.75 – 1.1 kW | 60 L – 100 L | Medium homes, 2–3 bathrooms |
| 1.5 – 2.2 kW | 100 L – 200 L | Large homes, irrigation use |
| 3.0 kW and above | 200 L – 500 L | Estates, farms, high demand |
Why buy from Pumps Africa & Tools?
Choosing the right domestic water pump pressure vessel can be tricky, but that’s where we come in. At Pumps Africa & Tools, we supply a wide range of booster pump tanks and borehole pressure vessels to match any household or farm system. Our team gives hands-on advice to ensure you get the right tank for your pump size, water demand, and budget.
Pressure Tank Final Thoughts
A pressure tank may look simple, but it plays a vital role in protecting your pump and ensuring steady water flow. The right size tank, combined with a trusted brand like Varem or Aquafos, will make your domestic water pump system more efficient and long-lasting.
For professional advice and a full range of pressure vessels in South Africa, contact Pumps Africa & Tools — your trusted supplier for all domestic and irrigation pump accessories.