jflsys,
You can certainly insulate density operated & thermodynamic steam traps. I would not insulate thermostatic steam traps.
The economics will likely favor physically larger traps that operate continuously. However the small heat loss off a single thermodynamic trap may not seem...
Since insulation is not 100% efficient, the steam will lose superheat over time & distance. You do not mention how much superheat is available at the start & the length of the distribution run.
In general, follow steam best practices and take off from the top of the pipe. Install drip pockets...
saraGT,
I concur with davsy. The spiraxwebsite has links to their technical reference books - Blue Book for steam 101 and their Red Hook-ups book. Also online tutorials. Main training facility is at HQ in Blythewood, SC
