I wish had a thing of HT really, but once it was within the allowable range up to 50 ℃, it used as a substitute as it is no problem. If it is a TS type it can be removed at maintenance time and it is good to be able to clean the piping.
If the pipe connecting to the valve is not straight with respect to the valve, water leakage will occur from the screw part. Therefore, it is necessary to tightly align support and handling of front and rear pipes. It may be inevitable due to the nature of the equipment, but I think that I am grateful if it is more flexible.