Do API 6D cover 1/2" reduced bore ball valve or covered dimension starting from 2"? Thank'you in advance to everybody shall answer me.

We are building a Vapor Compression Refrigeration Unit to cool a simulated, scaled-up electronic chip (cold plate with heater assembly on surface).

There were human factors at play, but a critical pilot operated relief valve was also faulted. I've seen this noted in many reports (Rogovin report) as well as all over the net and unfortunately also

1.Mechanical steam trap is used in manufacture heating equipments in which need heating up quickly and disallow existence of condensed water.

With today's energy prices, a plant's steam/condensate systems cannot afford to vent flash steam to the atmosphere.