Insulation of PEX pipelines: For outdoor exposed water supply pipelines, thermal insulation measures should be taken in accordance with the national technical regulations for antifreeze and thermal insulation engineering of water supply pipelines; thermal insulation measures should be taken for hot water pipes laid in ceiling pipe wells, pipe shafts and exposed pipe sections; distance between pipes and heat sources Generally, it is not less than 1m, and the distance between indoor open pipes and household stoves should not be less than 0.4m. Installation of water distributors in residential pipelines: When the diameter of hot and cold water pipes in residential buildings is smaller than De25, centralized water distributors should be set up, and the water distributors should be located at the shortest distance to each water distribution point; The height of the ground should be 0.3m for the cold water pipe and 0.45m for the hot water pipe; the material of the water distributor should be made of corrosion-resistant materials, and copper valves should be installed at the ends of the inlet and outlet pipes.
