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We know that it is usual practice to pipe chilled water to coils counter flow in respect to airflow. Another words the coldest water on the leaving air side of the coil. Question, is there any documentation that dictates whether the supply and return should be high or low on the coil?

What we have here in this scenario is a normal application in a retail center. The contractor has sent sch. 30 galv. pipe to the job site and there is no real corrosive aspect to this installation. What we are trying to decide is do we reject the galv. or not. To me it seems that in this...

Can you think of any reason to reject this pipe in leiu of using regular black steel pipe for normal building usage?

When should you use the hot dipped galvanized piping for sprinkler systems. Why would you use this over standard black piping?

Designing for sewage piping to be installed at a marina that will only be used during the warm months of the year by the members of the club. The concern or question that I have is if the piping is located near the steel wall pilings that extend above water level roughly 4' to grade. How can...