Aside from the fact that they are all used in hydronic heating systems, what do the following items have in common?
The answer is they are all commodities in the North American hydronics market. There are dozens of choices for all of these items from a wide variety of manufacturers. You can buy all of them at traditional wholesalers, “big box” stores or online. Price is often the major determinant of which brands sell the most. The majority of your clients don’t know enough to specify which brands of these commodities they want in their system. Most don’t care. Instead, they trust you to make the right selection. After all — you’re the professional.