Sealing Recuperation's Water From a Boiler System

Are you referring to a condensation return tank similar to the bottom picture?

We sealed and insulated these hospital units at the same time with the coating we work with.

This reduced the heat loss by 35% per the chief engineer for the hospital. We coated the boilers and steam pipes in the boiler room also. It also dropped the employee lost time injujries, from coming into contact with hot piping, down to ZERO. They averaged 6 per year and one the previous year was very serious.

The engineers later found out the coating was impervious to the boiler water with the chemicals inside. Anytime that water was spilled onto the painted boilers prior, they had to be repainted.

Once coated, the reddish briown stains from the wTER cleaned off with a scrubbing cleanser and a damp rag.

Our website is on my profile.

Hello. Thanks for your kind participation. I would like to know what is the highest temperature available to have in the condensation tank in order to avoid cavitation inside the return pump. Certainly we have coated all the pipes and the boiler. But not the return´s tank, just because actually I have never seen the return´s tank coated anywhere in my country. Actually I don´t Know if that custom is wrong. Do you know where can I find more specific literature related with this? Thank you again.

Study up on deaerators at

http://www.spiraxsarco.com/resources/steam-engineering-tutorials.asp

There is a whole universe of steam related information here and it is free if you have the gumption to dig into it.

You need to know how many gallons per hour return to this tank and the cost of insulation to see if it is justified. Also, you will need to know if the level of the water above the pumps is sufficient to provide adequate head to prevent cavitation at the higher temperature.

A tank that can achieve approx. 220F and operate at about 2-5psi will be best and operate as a dearator which will extend the life of your boilers AND save on chemicals.