What is the difference between the junction and hydrant elements?
The hydrant element is the same as the junction; you can enter the elevation and demand and connect pipes to it. However, the hydrant allows you to model the lateral pipe without actually drawing it. So, you could place the hydrant on the main water line, choose “true” for “include lateral loss” and enter the length/diameter. Otherwise, with a junction, you would have to draw an extra pipe out from the main line to model the lateral, which counts toward your license’s pipe limit and can clutter your pipe report. You can also easily open/close fire hydrants with the hydrant element. You can choose “open” or “closed” as the hydrant status to control whether or not the entered emitter coefficient is applied (which in turn would be used to compute a demand.) Otherwise, with a junction, when you enter an emitter coefficient, the program will always use it. Lastly, the hydrant symbol appears as a hydrant and you can organize your hydrants better, instead of having them all look the same and
