MHP75A Automatic Water Pump

[@Julius-ou9cf]

Can you please do a video wiring the 1.25 115 V pump switch box to the controller

[@jefflappin]

Does the pump hold 65 psi indefinitely after the hose is off or will the pressure drop off after a few minutes?

[@Kaltwasser45]

I really wish I could find a strong enough pump for our 120v stystem. We've gone through two Grunfos MQ-45 pumps and I think our current is a Walrus. Two story house and 3 full bathrooms. I wonder if this one will be better for us RainFlo MHP150A 1.5 HP Automatic Pump.

[@cgiff216]

Hi, the MQ-45 produces about 20 GPM max and 60 psi max. The RainFlo MHP150-A about 36 GPM max.and 65 psi max. So, for example if you are looking for about 30 psi the Grundfos delivers about 16 GPM verses almost 30 GPM form the RainFlo pump. You would see a sizable difference in flow from the two pumps. Conversely the pressure/head is a little better with the RainFlo which would help with the upstairs fixtures. Hope this helps!

[@Kaltwasser45]

It certainly does, this pump seems to have the best specs for 120v wiring. I like that the automatic unit detaches with the electrical unit diagnosis making it easier for a home owner to replace. This will be our next unit and I may just end this Walruses service a little early because it's even less powerful than the Grundfos, seems more reliable though. Thank you.

[@Stratouss]

I use the MPH75 for our house. 3000 sq ft with 3 full bath. I have plenty of water pressure even with the washer/dishwasher and two showers going at the same time. I purchased the pump in Aug 0f 2018, installed in Sept of 18. It is now Apr of 20 and I don't have a sing'e complaint.

[@975202]

@@Stratouss Do you have a pressure tank or just the pump? Thanks!

[@tonypentin7357]

It would good if you could describe pressure adjustment. The screw on the back of the controller does not move and it is overpressuring my on demand water heater in my RV. The pump is pushing well over 100psi.

[@oceanstropicalfish4410]

Sounds load af