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All About Shower Pumps
Are you disappointed with your showers performance?
A Shower pump will provide the extra boost to give your shower that extra force, they will also ensure that the hot and cold water is supplied to your mixer valve in a balanced way giving you the best possible performance from your shower. At New Team Pumps.co.uk we offer 8 pumps giving a variety of pressures to suit bathroom requirements, thus single and multi function showers can be fed.
Any mixer shower can be used with an electric pump from a gravity fed system to give higher flow rates and thus create a power shower.
Please Note: These pumps cannot be used with combination boilers, unvented or mains pressurised systems.
Choosing your shower pump
Our shower pumps are available to suit pressure ranges from 1.50 bar to 3.0 bar, with inlet and outlet connections of 15mm or 22mm (depending on the model), they are suitable for gravity fed water systems only. We recommend an electrical connection with a double pole isolation switch. It is best to check the specifications and installation instructions for each item before you buy as these do vary.
You can now download the installation instructions for each model on the individual product pages (see our pump collection here), you may also want to have a look at our Pump Comparison Guide showing the key features of each model.
In some cases it is possible that you may require a negative head pump, for example if you are converting your loft and the bathroom is above your cold water storage tank (pumps usually require 200-300mm vertical distance from the water level in tank to handset). Our negative head kit is a simple to install solution and is suitable for all 1.50 bar and 2.0 bar pumps.
Below are examples of typical twin impeller pump and single impeller pump installations.
TECHNICAL ADVICE
MOTOR RATING
A continuous motor rating means the motor will run continuously without over heating. Motors that have a 'minute' rating will run approximately for the stated time when the motor reaches a pre-set temperature and will then automatically switch off. The motor must be allowed to cool before it can be used again.
CENTRIFUGAL PUMPS
A centrifugal pump is the most commonly used pump and works by moving water using centrifugal force.
A good example is our Varispeed 50 shower pump.
In a centrifugal pump the direction of the 'flow out' is at a right angle to the direction of the 'flow in'. When water flows into a centrifugal pump it moves onto an internal impeller with radial blades, which spin very fast when powered, causing the water to get flung out away from the impeller by centrifugal force.
This energised water is then guided out of the pump through an outlet in the top of the impeller casing and can be used to enhance the performance of showers.
REGENERATIVE PUMPS
A regenerative pump is recognisable by the fact that the 'flow in' and 'flow out' positions go in the same direction as the axis of rotation of the impeller (similar to a fan) and are used to make liquids move faster.
Due to the design, water is propelled around the inner casing surrounding the radial blades of the impeller. The energy in the water pushing and rotating the radial blades also 'draws in' water at the same time to eventually be propelled through the casing and out of a top mounted outlet to the water fitting/s.
An example is our NT100R pump.
Take a look at our simple chart below showing each pump. You may also wish to view our Pump Comparison Guide for a detailed breakdown of each model.
SINGLE IMPELLER PUMPS
These are designed to boost the performance of a single water supply or mixed hot and cold supply (blended water from a mixer valve) to a single outlet, such as a shower handset or fixed shower head. See typical installation diagram.
TWIN IMPELLER PUMPS
These are designed to boost the performance of two water supplies (hot or cold) to for example, a mixer valve with separate flow controls. Depending on the selected pump rating they can be used to boost the performance of two water supplies to a shower valve. See typical installation diagram.
PUMP POSITIONING
Traditionally pumps are situated as close to the water supply as possible. They work more efficiently by pushing a water supply rather than pulling (sucking). Therefore, they are commonly found in airing cupboards.
NEGATIVE HEAD SYSTEMS
A 'negative head' situation occurs when the position of the cold water tank in the system is situated below the outlet of the shower / fitting. Also a very low head pressure can exist that does not provide enough natural flow to activate the pump. In this situation a manually operated Negative head Operating Kit will be required.
USABLE WATER STORAGE
It is important in ALL pumped systems to ensure that both hot and cold water capacity is sufficient to meet the household requirements.
Pumps will empty water tanks more quickly than a standard system, please bear this in mind when selecting the size of pump. You will need to check the capacity of both water tanks and also take into consideration how often the pump will be used.
For example the higher the pump rating a greater volume of stored hot / cold water will be used and can lead to the stored water supplies being exhausted. It may be necessary to increase the storage capacity of the cold water storage tank and increase the size of pipework supplying the water to the pump and hot water cylinder.
ELECTRICAL CONNECTION
Pumps must be installed to all relevant IEE Wiring Regulations (BS7671) and should be protected with a Residual Current Device (RCD) and have a double pole isolation switch. This should be of the pull cord type.
| Varispeed SI | Single Speed | Varispeed 50 | Duraspeed | Duraspeed 2 | Jetforce 55 | Jetforce 75 | NT 100 R |
| Centrifugal | Centrifugal | Centrifugal | Centrifugal | Centrifugal | Regenerative | Regenerative | Regenerative |
Additional Information
All Newteam pumps featured in this website have built-in pre-wired flow switches to start the motor and have high quality motor and ceramic /carbon seals to ensure longer life and leak free operation. the pump bodies (with the exception of the all brass NT100R) are made from acetal plastic to resist limescale build-up and enhance durability.
Supplies to these pumps should be dedicated and seperate from other devices.
It is important that the hot water supplies to the pump does not exceed its recommended maximum. Hot water contains air and the hotter the water the more air in the water. A water supply to the pump that is too hot can lead to a problem known as 'cavitation'. This affects the efficiency of the pump and can cause the pump not to deliver the hot supply, and increase operating noise.
It is advisable to fit easily accessible isolating valves to both inlets (where not already supplied). This will ensure future maintenance is made easy and compliance with Water Regulations. If in doubt contact your local water authority.
Pumps must be installed to all relevant IEE Wiring Regulations (BS7671) and be protected with a Residual Current Device (RCD).
IMPORTANT: The detail and information provided above is a general guideline and for information purposes only. We would always recommend you employ the services of a fully qualified tradesman / plumber / electrician to undertake and complete your installation.
If you need more information, help or assistance choosing the right pump for you please contact our technical helpline on 0843 658 0062.
We would like to thank Bristan for their help and assistance with the information and images provided on this page