Over curiosity, the arrangement pump and valves are- pump, check valve, manual valve following the flow of direction. . This is I believe is the rule of thumb!! However, there are another 5 possibilities of arrangements. What is the consequences if we swap or arrange according to another 5!!
A line of pipe with pump, check valve and manual valve. If the manual valve is removed. What is the consequence?
Arrangement of Pump and Valves 
Re: Arrangement of Pump and Valves
