The Grundfos STP B Twin Amazon Shower Pump is a heavy-duty, continuously rated regenerative pump designed to boost water pressure in gravity-fed hot water systems. It features premium brass impellers and housing for enhanced durability and high performance, suitable for domestic, commercial, or light industrial use. This pump effectively boosts both hot and cold water to a single shower or can be used for multiple outlets. Its low-noise design includes a quiet induction motor and minimal turbulence pump head, further enhanced by anti-vibration feet and long-life silicon carbide seals. The pump is designed to overcome air pockets, making it ideal for plumbing routes with multiple bends. It comes with 22mm stainless steel hoses and push-fit connections for easy installation. Built with brass construction for smooth operation over years of use, it also includes built-in thermal protection to prevent overheating. The Grundfos Amazon STP-2.0 B is WRAS Approved and comes with a 5-year guarantee.