I just got this pump. The problem is that I am not able to test it since it does not suck up water. Manual says that it needs to be primed.
So what I did is took a 3 inch length pipe and used it for the inlet. This pipe was placed directly under a flowing tap. A long 4 feet pipe was used at the outlet.
Now with this setup the water circulated but the thing is that I had to be careful about pipe directions i.e. if the outlet pipe was 90 to the inlet (parallel to outlet) no flow takes place. I have to bend it. And not too bend it since the flow would stop. This is a pain

, what is the proper way to do it?
Also, I don't see a huge flow

(317 at 3.5 bar should have been 5 times at least, the current I am seeing).