Best continuous-use electric fuel pump??

[sidevalve8ba]

I am having electric fuel pump problems. I have been using a Carter P74017 low pressure pump with a pressure regulator. I am using twin 94's and have set the pressure at the regulator at 2.5#. I am not using a mechanical pump at all. The Carter pump is mounted at the tank and I have a fuel filter between the pump and the tank.

In the past year or so I have had two of these fail. They still make noise like they are pumping but it shows 0 pressure at the regulator. What am I doing wrong? Am I using the wrong style of pump or brand?

I just barely made it home today and I would like to remedy this problem. I searched the other posts but most if not all of what I found had to do with using the electric pump to prime the mechanical pump or in addition to the mechanical pump.