Thermostatic Mixer Showers
To maintain a constant temperature without having to continuously adjust the hot and cold-water inlets, thermostatic shower valves are the only option. All Trevi thermostatic mixer showers* utilise a temperature sensitive wax cartridge that maintains the water temperature to within +/- 1 degree and ensures that the temperature and pressure is automatically controlled, preventing cold water shock or hot water scalding. *Excludes Tradition
Exposed Manual Mixer Showers
Single lever control with hot and cold inlet and mixed water outlet. Manual mixer showers do not compensate for variations in water temperature and pressure.
Venturi Mixer Shower
High pressure mains cold water is used to “pull through” tank pressure water through the special venturi valve inside the shower control, so the resulting mixed water comes out at a much greater rate than could be achieved using an electric shower or ordinary shower mixer valve. Gives excellent showering performance in conditions that are often deemed unsuitable for conventional thermostatic showers e.g. guest rooms, en-suites, attic bathrooms. Ideal alternative for electric shower.
Choosing your shower
The good news is that anyone with a hot and cold water supply can have a Trevi shower.
Low Pressure Low-pressure gravity fed systems
This is the most common type of heating system. To create the shower pressure, water flows directly from a cold-water tank (cistern) in your loft to a hot water tank (cylinder) in your airing cupboard. The greater the distance from the bottom of the tank to the top of the showerhead, the better your shower will perform.
High pressure – Combination boiler/modulating boiler
A combi-boiler heats your water up as soon as you turn the shower or hot tap on. It’s often located in the kitchen and supplies water at high pressure. Usually this system has a water pressure of between 1 bar (equivalent to 10 metres between the bottom of a cold water tank to the top of the showerhead) and 5 bar.
Unvented mains pressure
This system stores hot water under pressure in a large cylinder, which is usually found in an airing cupboard or garage. You can identify it by the expansion vessel on top of the cylinder and the absence of a cold-water tank. Sometimes, in a refurbished property, an unused cold-water tank will be left in place.
Pumped gravity fed system
Essentially a gravity-fed system, but with the addition of a booster pump, water is delivered to your shower at high pressure for better performance. The water pressure will depend on the pump, but in most cases this will be 1-3 bar. You may need to increase the capacity of your hot and cold-water tanks.