D-pipes have advan­tages over the stan­dard C-pipes in many oper­a­tional situ­a­tions. This book is the first train­ing liter­a­ture for the appli­ca­tion of D-lines. The focus is on teach­ing the “hydraulic tools of the trade”. In addi­tion, there are numer­ous prac­ti­cal tips on the use of D-lines. Test ques­tions are included after each section for self-monitoring.