Hiblow HP-80-0117 Septic Air Pump

How quiet are they

The Hiblow HP-80 is very quite almost silent you will not hear it when you are outside or in the house. Most of the time on inspections we have to physically touch it because you can not hear most of them. 

Does the xp 80 HiBlow aerator take the same rebuild kit as the hp 80 hiblow aerator

No the hiblow xp-80 will take a different rebuild kit than the HP-80 it will be slightly more. 

What it is the average lifespan of these pumps, while it is running continue.

It really depends on the area you live in. In southern states, we see an average of 3-4 years before they need to be rebuilt. In northern states, you can get an additional 2-3 years out of them. 
Some people get longer life out of them they are the exception not the rule. Wehaveseen them run 10 years no issues but its rare. 

Can a 1/2" line be hooked up to the ouput of the pump oulet?

It is about a 1/2 inch what you can do is get a male threaded 1/2 fitting with a female slip on the other end. You take the male end and put it in the rubber 90 that comes with it and then use 1/2 PVC the rest of the way.

Does it come with a rubber 90 to connect to the pvc, or hose tubing to the septic air pump. Also would like to know what size pvc is the easiest to connect the the rubber 90 if it comes with it.

Yes it comes with a rubber 90 to conect it to pvc or tubbing of your choice. 1/2 inch is the easiest to connect the pump use a threaded male  1/2 with slip non threaded female on the opposite end. The threaded part well screw nice and tight into the rubber 90 and be secure. The rest can be glued into place easily. If you already have pump like this they are all pretty universal and the outlet is pretty much the same across manufacturers. No modification should have to be done. 

Does this pump hp80 need an enclosure like my rotary vans pump had?

It is advisable you put the HP-80 under something to cover it from the elements slightly. We don't use a fully enclosed enclosure as you can see the unit and we feel it make the septic air pump run hotter than it needs to. We use a more of a cover made of fiberglass, and it's entirely open on both sides giving proper ventilation and excellent visibility to the Hibow. 

what is the diameter of the discharge port? and does it come with hose?

The diameter is slightly smaller than a 1/2 and every pump comes with a new rubber 90 hose to connect the Hiblow to the hose or pvc coming from the aerobic septic system.  

Does this pump operate continuously or does it come on and off based on the circumstances?

The pump is supposed to run continuously. There is not an aerobic septic system that currently uses the Hiblow HP-80 that comes on and off. Specific systems do have septic air pumps that do turn off for a period of time 3-4 hour, but it is for nitrogen reduction where the home is on a lake or close to a public waterway. The pump only takes five to eight dollars a month to run, so it's not a significant factor in the electric bill. 

I have an alarm on my current aerator that looks just like the one on the HP 80A. Can I take it off of my current pump and install it on the HP 80 that does not come with the alarm?

You cant do that. Unfortunately, the top aluminum housing is different on the hp-80 and the hp-80a so you couldn't put the alarm on it. You would also have to solder the wiring on as well to make it work.   

What is the liter per hours for this pump

80 liters per minute. That is what the number means at the end of pumps the liters of air per minute. The Hiblow puts out more but with water pressure and length of the airline by the time it reaches the point of exiting the airline it is at 80 LPM or (liters per minute).