Has anyone used a MAS Controller?

[Wet_Boots]

We already read the instruction manual that said the output pressure would exceed specs, so why the surprise?

How are the pressure relief valve(s) working for you?

[tonyvol]

Originally Posted by Wet_Boots

We already read the instruction manual that said the output pressure would exceed specs, so why the surprise?

How are the pressure relief valve(s) working for you?

Wet Boots, I talked to the manufacture before I installed the MAS Control and we went over my system. They said that as long as there was a check valve after the MAS Control and my pressure didn't exceed 145 psi it will work. Wrong. When the pump was running the pump with get up to 90 psi on the supply line. But the pressure in the supply line must have been higher than that.

I had the pressure relief valve set at 100 psi but it didn't seem to relieve the pressure enough. When I checked it after the system dead headed there was much water on the dock from the pressure relief. I would have thought I would be shooting a stream of water.

[Mike Leary]

Is your lash-up different than this?

[Wet_Boots]

the numbers in the manual suggested that the uphill run added to the operating pressure would be excessive - they do give an alternate install, where the controller goes up the slope from the pump

As for a mechanical pressure relief, there is always the possibility that a simple spring-loaded valve won't cut it, and you look for something else (very spendy)

I suspect the really simple pressure switch and pressure tank and master valve setup would have worked fine, because the uphill run would have done the same thing the pump control does - provide a resistance for the pump to push against.