Peristaltic Vs Diaphragm

Peristaltic are great except for the tube wear... I wouldn't use 'em for continuous running or high duty cycle.
A diaphragm will wear out eventually and of course it has valves to worry about.

Del

For that flow rate 150 gallons per minute, I think you will not find a peristaltic pump capable of that flow...

A good diaphragm pump might be the best choice, but I'm not sure about the flow rate required together with the head you want...

John.

PS Woohoo my 2000 th post

Yeh..that would be onehellofa peristaltic.... far outside my experience...although I have seen pics of biguns.

http://en.wikipedia.org/wiki/Progressive_cavity_pump

Didn't have time for anything but the link earlier. If you look at the "Typical Applications" section of my link in post#4, you will see Sludge pumping listed.

I've seen 2 small units used (50 GPM) for 3 years with very little maintenance, and no problems. The 150 GPM spec is certainly doable, and the 175 TDH should not be a problem either. If you need to change the flow, you will have to install a VFD since it is a positive displacement type of pump.

I would be surprised if an "off the shelf" peristaltic would do this job. I would think a diaphragm is a possibility as long as it is set up for sludge.

Another thing to look into is a centrifugal pump since they are able to handle sludge and last a long time. I know 175 feet of head (if that is what the 175TDH means) is a lot for a centrifugal pump but standard "high head" centrifugal pumps are available "off the shelf" that can do this.

I suspect that the centrifugal pump would use more energy than a diaphragm pump. The different manufacturers or distributors can show what specific applications their pump is intended for.

Hi Trinity32244,

At a chemical plant I worked at, the waste treatment facility primarily used diaphragm pumps. These days you can get quite rugged ones that can handle some sludges and that will easily handle your specified flowrate. In our treatment basins, sludge would build up. When enough built up, and after decanting most of the liquid off the top, a "suck truck" was called in to remove the sludge by vacuum and dispose of said sludge as hazardous waste.

Best Regards,

Mike

From the Field;

If you have a large volume of air greater then the 75 psi that that it will take to get the water to the 175 foot mark I would use a diaphragm pump with a surge suppression device.

you can also vary the air and have a cheap VSP.

I have not seen a peristaltic pump that will do the job and I wonder if a diaphram pump can handle the viscosity and occaisional lump. A macerator pump is probably the best for the job and a centrifugal pump might be able to do the job if the sludge is of low enough viscosity.

Envoronment / One http://www.eone.com/ makes grinder pumps that are more than sufficient for your application and can handle just about anything.

We have used a diaphragm pump to transfer contaminated fuel for over 20 years. It is not used every day, more like 2 to 3 times per month. Usually about 750 gals per month. Always loads of trash in this product. Safety wire, bolts, nuts, gaskets, etc. The only things that would stop the pump was when the safety wire would get caught in the ball check valves. Or when insects would build a nest in the air inlet.I have never had to replace any parts in this pump.

The model I use is made by Aro division of Ingersoll Rand, it is a 1" model that does about 35 gpm. It will pass anything 1/4" or smaller. I also have 2 larger 2" models that only pump clean foam concentrate. I have had a diaphragm go bad on this one of these, but that was still 5 years old, and that was because of a loose part. These are extremely reliable.

Try www.aroingersoll-rand.com Explain what you need to pump, and they will recommend the correct size and components. They have a large choice of materials to build these pumps out of. Plastic, aluminum, coated aluminum and stainless steel. Also a large selection of diaphragm and seal materials. Good luck.

Use the diaphragm pump. The Wikipedia link was for a Progressive Cavity pump. Not the same technology. The suggestion of the E1 grinder pump won't work since the E1 grinder pump can only deliver about 15 Gallons per Minute. Diaphragm pumps have been in use for many years as sludge pumps for wastewater and many other applications. The paristaltic pumps available today will not deliver the required capacity. Can you imagine the diameter of the hose that would be required to get 150 GPM!! Centrifugal pumps may be alright depending on the specifc gravtiy of the product you are pumping. For many years, wastewater technicians used the old Plunger pumps for this service. Rather old technology, but still in use.

Just so you know there are many peristaltic pumps that deliver in access of 300gpm. Periflo Pumps are just one example 440gpm

May I suggest a Bredel SPX100 Duplex Hose pump?

http://watson-marlow.com/pdfs-global/wd-SPX100-gb-01.pdf