ProVore 380 1 HP Pre-Assembled Simplex Grinder System Pump

I thought I knew the answer but please know that I called Liberty’s tech department and confirmed it. This pump has a relief hole built into the volute on the opposite side from the discharge connection that will allow air to exit so that the pump does not become air bound. If you would like to drill a small hole in the discharge pipe you can do that, but it should not be necessary. Lastly you should know that the float settings from the factory are such that the chamber does not completely empty when the pump cycles. This is on purpose. By keeping the bottoms of the pump aka the volute, constantly submerged, air does not have the chance to get into the volute. In fact, when I do large commercial systems in cement tanks, I set the floats so that the pumps are always underwater. When the pump cycles it only pumps down to the top of the pump. By keeping the pump constantly submerged, it can’t become air bound, never dries out and always is surrounded by cooling water. Obviously in a small system like this you can’t keep the pump completely submerged as the chamber is just not that big. But you still don’t want the chamber to completely empty.

If you scroll down the Home Depot product listing page you will come to a section entitled product details. If you expand that section, you will find PDFs of the product documents. The specification sheet indicates that this model draws 12 amps and draws 47 amps with a locked rotor. The size of the breaker as well as the required wire gauge would depend on factors such as what else is on the circuit, the overall length of the circuit and the electrical code in your state. For a definitive answer you would want to speak to a local qualified licensed electrician or the electrical inspector in your town. My guess is that they will want this on its own dedicated circuit with a 20amp breaker using the correct wire gauge given the distance from the panel as regulated by the electrical code.

Pumps produce a pressure differential. In this Case a very powerful differential. When you reduce pipe size, just like when you put your thumb over the end of a running hose, you do not change the pressure. Because the pressure is constant the same amount of water must move. So, what you create is velocity. The water speeds up. If you were to reduce the pipe size from 11/4’ the waster water would move so fast that the system would be extremely noisy. Pipes would bang and could shake lose. I also can’t imagine it would meet code anywhere. I would only pipe this in 2” both the discharge and the vent.

I am sorry but that is not enough information to give you a definitive answer. But if I were to make a guess based on my experience, I would most likely start with a 4”x3” Fernco coupling. Put Home Depot SKU number 6877995 in the search box and it should come up.

This pump has a vertical lift of 50 feet. For more detailed information about the pump's performance at different heights and flow rates, please refer to the pump curve in the product specification sheet. You can find this document under "Product Details" on the product page.

87 Lbs. If you scroll down the Home Depot product listing page you will come to a section entitled product details. If you expand that section, there are PDFs of the product documents. Weights are indicated on page 3 of the brochure.

Please scroll down the Home Depot product listing page to the section entitled Product Details. There you will find PDF’s of the product documents. If you open the specification sheet you will find the pump curve. All pumps are rated on a graph called a pump curve. On one axis you will find the height of lift and on the other flow rate. The graph illustrates pump performance across its range. Intuitively people are always concerned about the length of the run. But in reality the friction created by the fluid moving through the pipe is insignificant when compared to the downward force of gravity on the water column. Granted if you are pumping great distances you may take this into consideration but you are not going a great distance. First you want to calculate the total vertical height of the lift. We call this the head. The total height you will be lifting the water. Next you want to calculate what you need for a flow rate. Then using the pump curve you can determine if the pump will give you the flow rate needed at that height. Using this pump curve you will see that if the application requires the fluid be lifted 0 to 5’ the pump will move 45 gallons per minute. But at the other end of the curve, 50’, you are at what we call dead head. All the pumps power is being used to lift and support the water column. There is no additional capacity to create flow. I think of dead head as the height of a wall where the pump can get water to the top of, but it can’t get any over. As a best practice I try to select pumps where my application falls as near to the center of the pump curve. I try not to over or undersize. Chris 978 651 3301