Block valves and pump station configuration

Flow Network models can be configured from a higher point-of-view where block valve stations are represented by single valves in an Open or Closed state and pump stations are represented by a single pump. This is simply a conceptual change for an Administrator, as Line Blockage functionally does not change.

In the example below, the line has three pump stations configured, represented by a single pump (pumps A, B, and C). There are also 10 block valves configured along the line, with injection and delivery meters on the left and right. The closure of valves 2 or 3 will cause a shutdown of station A, and a closure of valves 5 or 6 would cause a shutdown of both stations A and B. Due to the multiple deliveries, a closure of both 7 and 8 will cause a shutdown of A and B, but the closure of valve 8 will always cause a shutdown of C if either valve 9 or 10 is open.

Nodes have been placed between each pump and group of valves, as combining pumps and valves on a single segment is not allowed. The closure of any valve on a segment results in the entire segment being closed, which blocks any pumps attached with the segment. This blockage can cause misconfiguration if a valve appears to be before a pump on a segment and is not meant to block the pump.