General description Manufactured to the highest standards, the John Guest Speedfit Lowfit 4 Port Manifold is designed for underfloor heating systems. Made from high-performance stainless steel, it features 12mm connections and is available in various sizes from 2 to 12 ports. The manifold is fast and simple to install, thanks to its unique JG Speedfit push-fit connections, pre-mounted bracket, and vibration isolation mount. Technical specifications Material: Stainless Steel Connection Size: 12mm Port Options: 2 to 12 ports Compatibility and accessories Compatible with JG Speedfit PEX and polybutylene barrier pipe (inserts required) Valves on the return manifold are compatible with thermoelectric heads Installation Fast and simple installation using 12mm Speedfit connections, eliminating the need for further reducing adaptors Each manifold is supplied fully assembled with flow and return rails, adjustable flow meters, an automatic air vent, and fill valve Protective dust caps are