Peristaltic pump in chemical service

[Oneup]

I presently have gear pumps in raw material supply to chemical processes. They are very troublesome for a variety of reasons. I have discovered peristaltic pumps and it looks as if they might be a fit. I wonder if anyone has experience with peristaltic pumps in chemical plant service. If so, how well did they work out, advantages, disadvantages, what brand was used, etc. The brand I am looking at is Periflo.
Thank-you for your input.

 

[Kawartha]

Oneup,

My experience with peristaltic pumps is somewhat limited, however in all of the times that I have considered this type of pump for an application, it has always been as a last resort. This is because the life cycle of the hose is rather limited. If you are considering this type of pump, I assume that you are dealing with a corrosive liquid with substantial quantities of solids.

You may also want to consider Air Operated Diaphragm Pumps (AOD's), and diaphragm metering pumps if your flows are relatively small (a few gpm/min.)

Regards

 

[Oneup]

Yes the materials are corrosive but do not have a lot of solids. The life of the hose is my biggest concern.

 

[assco]

Hose pumps suck. Nothing but trouble for me. Use a metering pump as previously stated if flows aren't to high.

 

[Oneup]

Thank you all for your input. I have on order a motor driven single diaphragm pump. I will let you know how it works. I will name the brand if anyone wants to know. We have high hopes it will do the job. It will eliminate the mechanical seal, is inexpensive and simple to work on, and the initial cost is not high. There is a early warning device for diaphragm failure. The pump can be multiplexed.

 

[JonBoyz]

Oneup could you name the brand of motor driven single diaphragm pump that you just bought recently. I have another application in mind for that paticular pump. Thanks.

 

[Oneup]

It is an American Lewa. If you are in the Gulf Coast area, there is a representative in Houston at 713-577-5392. The website:

http://www.americanlewa.com

 

[kenf2e]

There are two main types of peristaltic pumps, one is the labratory type that uses typically low pressure platic tubing to achieve pumping. An entire other class of peristaltic hose pumps exist that uses high strength reinforced hosing similar to belted tires. These hoses and pumps can handle pressures upwards of 200 psi and various nasty chemicals and abrasives. This is the type of pump that PeriFlo sells.

The industrial grade peristaltic hose pumps have been used with great success in a variety of industrial applications and have replaced numerous AODD, progressive cavity, and gear type pumps. Solvents and other chemicals not compatible with NR, Buna, or EPDM would also be discouraged from use with a hose pump.

If you want to check out industrial hose pumps go to

http://www.periflo.com

 

[assco]

To JonBoyz, don't limit yourself to Lewa. Check out Milton Roy and Brann & Lubbe. If you are on the gulf coast call 251-443-9988.

 

[Scipio]

Another option for a diaphragm pump manufacturer is Pulsafeeder, I just installed one of their simplex units for condensate injection and it's ticking merrily along.

 

[nenglert]

Your application is one of the most common uses for a peristaltic pumps. For ease of service I would revist peristaltic pumps verses a diaphragm pump.

http://www.stenner.com

is one of the leaders in quality peristaltic pumps.

If you need further assistance call 800-683-2378.

 

[Bensley]

Bensley
I always used a pneumatic operated Williams Pump,diaphragm type or PD pump (piston) for corrosive or non corrosive chemical application, there are a few models to choose from, low and high pressure, but only low flows, being suitable for many injection projects.

Totally reliable almost maintenance free, if installed correctly with filters etc. Only possible drawback they are very expensive