Originally Posted by 123champ
I have an 'Armstrong Astro Express' hot water circulation pump, which has stopped working after 3 1/2 years of service - so I am looking for a replcement.
I came across a variety of brands online; so am looking for recommendations.
Does any of the following outshine the rest?
1. Armstrong Astro Express (The brand which I was quite happy with, but which died out rather prematurely in my opinion)
2. Watts Premier (Cheapest one available)
4. Any other?
Another question -- should I also replace the check valve between the water heater and the pump?
May even bolt into the same flanges if yours has flanges.
Just don't get one any bigger than you need to move the water.
If you move the water to fast it will cause internal errosion in a copper system