Flojet VSD Water Pump

Solved the problem, installed a Shurflo Revolution 4gpm 55psi pump today, little bit noisier but the Oxygenics shower head works great, kitchen faucet has 3 times the flow but the main thing is momma's happy.

That is what I have found also, I bypassed the rv system and ran a 1/2" X 10' long hose directly from the pump fitting into a 5 gal bucket & it put out the 4 plus gal in a minute. I put a pressure gauge on the end of the hose and the static pressure was 45 then settled at 30 psi which is insufficient pressure for our Oxygenics shower head. I contacted the mfg. and they said there is no pressure adj. on any of their pumps just select a pump with higher pressure.
So I guess its back to Shureflow

I too am disappointed by the pressure. I have a guage installed indoors and it shuts off at around 45# but when you take a shower or get water from the faucet it runs around #12 while the water is flowing. They don"t tell you pressure while flowing, just gpm and maybe shutoff pressure. That is within specs just lousy working pressure.

Remove all your flow restrictors from all water handlers(faucets, shower,etc). You will find a lot of them. Then your pressure will be excellent.

I had a suction leak on the inlet side at the winterization valve.

There may still be some mill scale (factory debris) somewhere in your system.

The filter has been cleaned, nothing in it. This pump has less than 300 gal thru it, never seemed right to me just now trying to trouble shoot it.

On a used 5ver that I owned that was close to 9-10 yrs. old, I started to have problems with the pump not working well. I took the pump apart and found plastic filings from the original drilling into the tank from the factory. They had never been removed. The original owner must have used mostly city water as he used it in only for snowbirding in AZ.

Do you have a filter on the pump? Any in-line screens? They may be clogged.