Hi , I recently installed a concrete storage tank to supply water to my property , it's fed by a well pump that works well, shuts off when the level in the storage tank is full. the problem here, is between the storage tank and the house. this is the layout: the storage tank is supported by three concrete columns, the tank sits on a reinforced platform approx. height 3.4 meters . water drains from the tank to a Gould's j10s jet pump supported on a platform approx. 1 meter below the storage tank, so there is contious positive head applied to the suction, from the output I installed a check valve ( 1 inch output from pump ). the line then drops to a carbon filter and then to the ground where I've piped it into a 200 liter varem bladder tank ( tank and pump are brand new ) from the bladder tank I installed another check valve and then a ball valve for system shutoff. the settings on the jet pump are 30/60 , I bled off 2psi at the bladder tank , bringing down the bladder tank pressure to 28psi.At first when I initially started the system I did not install a check valve after the booster pump and the pump would run until shutting off at approx. 60 psi ( according to the output pressure guage I installed ) but the guage would promptly bleed down pressure and the pump would start again, until I realized that with the main shut off closed , water was migrating back up the line and into the tank, it's then I installed a second check valve ( backflow preventer ) at the outlet of the booster. Now having done that , when I close the shutoff and attempt to run the booster and pressurize the booster tank , it should shut off at aprox 60psi ( which it did previously ) instead the switch bounces attempting to shut off and on again...currently the only way to run the system is to open at least one faucet in the building, open the main shutoff and throttle the ball valve that supplies water dropped from the storage tank to booster pump , if I attempt to close a faucet or the main shut off downstream from the booster tank the booster pump pressure switch will short cycle , on and off...anyone have any ideas ?? p.s. dimensions on the piping : 1 1/4 inch inlet to booster pump , 1 inch pipe from outlet of pump to main shut off...I'm beginning to think the booster pump is redundant in this setup and the drop from the tank will provide sufficient head , voloume of the storage tank approx. 3 cubic meters