reasley wrote:
The Shurflo's are actually quite robust. I have been selling them since the early 80's (1000's of them). and in all that time I've only seen 2 ruptured diaphragms. Both cases resulted from running the pump dry for several hours. A far more common problem is a small piece of debris stuck in one of the valves. The most common debris are small pieces of polyethylene from drilling the the inlet/outlet ports in the tank, followed by a bit of teflon tape. A piece of debris will prevent the valve from sealing and the water will be pumped back and forth from cavity to cavity. On occasion a switch will fail, but usually from rapid cycling burning up the contacts.
While the majority of the pumps we sell are still Shurflo, in the last couple of years we have begun selling selling Remco pumps, but only around 25 to 30%. The only reason for the change is the fact that Shurflo is no longer made in the US, while Remco still is.
I guess you know nothing of the horrible reputation of the 5.7 pump?