Grundfos STP-4.0 B Shower Pump A 96787471 with all hoses. Was installed and works perfectly but replaced after we installed combi boiler. Grundfos Amazon Twin Impeller Positive Head Brass Pump 4.0 Bar - STP4.0B. Usage: This 4.0 bar twin impeller shower pump is designed to supply both hot and cold water to your shower for a powerful shower every single time. Compatibility: A positive head shower pump is designed to be gravity fed, therefore it needs a'head' of distance (at least a metre) between the pump and the bottom of the cold water cistern.
Installation: Grundfos shower pumps are easy to install. Everything that you will need for installation is included for you. Material: The shower pump has a durable and robust brass construction to ensure your shower pump is running as smoothly as possible for years to come.