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Choosing the Right Taps and Shower for a Gravity Fed Water System

When designing or renovating a bathroom, one of the key considerations is the type of water system you’ll be using. In areas without mains pressure, many homes use gravity-fed water systems. These systems are also common when using rainwater or a private tank. Gravity-fed setups rely on gravity rather than strong pumps. Because of this, you must choose suitable taps and showers for the best performance.

In this blog, we’ll explore the best taps and showers to use with a gravity-fed water system, and why these are crucial for ensuring an efficient and comfortable water flow. 

Understanding Gravity Fed Water Systems 

Before we get into the specifics of choosing taps and showers, it’s important to understand how a gravity-fed water system works. 

A gravity-fed system uses gravity to push water from a tank to your taps and showers. The tank is usually placed high in the loft or on a raised platform. A higher tank creates greater pressure at the taps. Even with a good tank position, gravity-fed pressure is lower than typical mains pressure. This reduced pressure can affect some fixtures, especially those made for high-pressure systems.

1. Taps for Gravity Fed Systems 

When selecting taps for a gravity-fed system, the primary concern is ensuring that the taps are designed to handle lower water pressure. 

Low-Pressure Taps 

Gravity-fed systems typically operate at a low water pressure (often around 0.1–0.2 bar). As such, low-pressure taps are ideal for these systems, as they are specifically designed to perform well with reduced water pressure. 

  • Lever Taps: These are a good option for gravity-fed systems. They provide a simple mechanism to control the flow of water, and most low-pressure models are designed for a steady, regulated flow even under low pressure. 
  • Mixer Taps: For basins and baths, a low-pressure mixer tap can blend hot and cold water effectively, offering a smooth and comfortable flow. Be sure to check that the mixer tap is rated for use with low pressure. 
  • 2 basin taps rather than a mixer – Generally the more traditional 2 taps on a basin will work better on low pressure systems as their performance starts from 0.1 bar, but this must be checked with the manufacturer depending on the make. 

Avoid High-Pressure Taps 

Avoid using high-pressure taps (such as those designed for mains-fed systems) with a gravity-fed setup. High-pressure taps often rely on greater water flow and may either not work properly or become damaged in a low-pressure system. 

2. Showers for Gravity Fed Systems 

When it comes to showers, pressure is crucial, and low pressure can result in a disappointing shower experience.  

  • Electric shower – A lot of customers have electric showers to ensure they always get an acceptable shower. They now come in more modern designs for those who want a luxury aesthetic.  
  • Single shower heads – Opting for a single shower head without the waterfall overhead is a good idea as the overhead showers need a lot of pressure to perform which gravity systems just don’t offer.  
  • Power Showers: In some cases, a power shower can be an option if you want a more powerful shower. Power showers combine a pump with a low-pressure system to boost water flow, but they do require an electrical connection. If you’re relying on a gravity-fed system, be sure to get one that can handle the low pressure or talk to an expert before installation. 

Shower Valves and Controls 

When selecting shower controls or valves for a gravity-fed system, look for low-pressure compatible models. These valves are engineered to handle the slower water flow and will allow you to maintain a steady temperature and flow rate. 

Avoid using high-pressure shower valves that are designed for pressurised systems, as they can restrict water flow and perform poorly in a gravity-fed setup. 

3. Pressure-Boosting Options 

If you find that the water pressure from your gravity-fed system is still not sufficient, there are options to boost the pressure without completely overhauling your plumbing. Consider: 

  • Pressure Boosting Pumps: These pumps can be added to your gravity-fed system to increase water pressure. They’re relatively simple to install and can significantly improve the performance of your taps and shower. 
  • Elevating the Tank: If your tank is positioned at a low height, consider raising it to a higher point to increase the gravitational pressure. A height of around 1.5–2 meters above the highest tap or shower is typically enough to provide a noticeable improvement. 

Final Thoughts 

Choosing the right taps and showers for a gravity-fed system is important for good performance. Fixtures designed for low pressure can improve your bathroom’s comfort and usability. Low-pressure taps, air-injected showerheads and suitable shower valves work well with these systems. These options help you enjoy a satisfying water flow despite pressure limits. Water-saving features can also improve the efficiency of your system.

Always consult a plumbing professional if you’re unsure which fixtures will work best for your specific setup. With the right selection of taps, showers, and other fixtures, your gravity-fed system can be just as functional and enjoyable as any mains-pressure system. 

Need Help Choosing Products for Gravity Fed Water Systems?

If you’re unsure which taps or showers suit gravity-fed water systems, our expert team can help. We can guide you in choosing low-pressure fixtures and suggest upgrades that improve performance. Our support ensures your bathroom works exactly as it should.

Get in touch today or visit our showroom for friendly, professional advice on all things gravity fed water systems.