The Steamboating Forum

True that the large buildings that I work in are continuous running, but my issue is that the valves will not hold if used to throttle. There are basically two occasions that I use a valve, first is for isolating for repairs the other is throttling a bypass while repairing a PRV. I have seen a gate ...

For unions I prefer forged 3000# fittings. Better machining, fit and finish and usually cheaper then an extra heavy malleable. They also resist pipe wrench marks better.

A globe valve is the only accepted valve for throttling. All other valves will be damaged over time or after one use depending. IMO I've seen too many "Steam Rated" ball valves fail, in a system I am tasked to fix they go in the scrap pile even if they are still working and replaced with t...