Salamander CT55 Xtra Pump - 1.5 Bar Single ImpellerCT55 Xtra Designed to quietly and efficiently boost the hot and cold water supplies to the thermostatic or manual mixer valves and are suitable for a wide range of shower types and heads, these pumps will increase flow to any type of shower making them the best value for money pumps available. It is important to choose the right pump for your system as incorrect selection can mean the pump will not work. To decide which option is best, check out