I am selling a gently used (about 3 seasons) Taco X-pump block XPB1. Comes with Tekmar 510 thermostat, outdoor temp sensor, two temp sensors (for the nearby pipe), 0-100 PSI gauge, expansion tank, Spirovent, Watts 374a, and nearby connected copper (valves, etc.). It was used to run a radiant loop in a bathroom, and was all working perfectly, but has been replaced by a magnificent system designed by the folks at NRT as part of a larger renovation project.
If there is no interest here, I'll put it all on eBay in a week or so. Located in central MA, but I can box it up and ship just about anywhere. More details and photos can be provided.