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Topic: Hydronic Heat Circulation Pump Replacement MP-100 (Read 550 times) previous topic - next topic
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Hydronic Heat Circulation Pump Replacement MP-100

Yahoo Message Number: 78297
It time to talk about circulation pumps again. We have Webasto Hydronic Heat system in our motorhome. It uses a couples of MP-100 circulation pumps to move the coolant to the interior radiators. There is also a MP-100 pump to the dash heater in the front. All the pumps have had pump seal failures. The one for the dash heater is the latest failure and needs to be replaced. The pumps are expensive. I am looking for a magnetically coupled pump to replace the OME pump. Does any one know of such a replacement pump?
I found the following this pump that might work; it would require some modification to install.

Johnson Pump Cm90 Circulation Pump - 17.2gpm - 12v http://www.johnson-pump.com/jpmarine/products/circulation/cm90.html
It's magnetically coupled which would resolve the seal failure. The negative is that it is ¾ inch in lieu of 1 inch and the discharge is different. Looking at he remaining spec I think it would work. It cost less then the MP-100.

Your thoughts?

Frank

2000 Magna 5766