Considering how most of the well know domestic manufacturers of high quality valves have been bought out by conglomerates, how is one to know who is making the top-of-the-line products these days? I get a myriad of feedback from O&M personnel and distributors, but rarely get the opportunity to hear the opinions of other consulting engineers. I would like to hear opinions (and the reasons behind them) on who is making the best valve for the applications below:
Butterfly  valves (shutoff) and Globe (throttling) for hydronic service
Gate (shutoff) and Globe (throttling) for steam service
Based on my best knowledge, the valve with the lined ceramic has good perforamace in terms of Reliability and longivity. But the ceramic material is the key point to those benefits i mentioned above. thereby, ceramic technology needs to be improved yet, but i suppose that  the ceramic valve is promising in the field of high-abrasive and high corrosive working condition. Some special alloy valve also have good perforamnce, but the price is still over-high in some particular field.

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