Thank you very much for your reply. Helped me to understand some about the subject. I already order the book from the Traplet store.
Regards,
Luis

Yes and there is a lot to learn, I suggest you find a book on the subject. One I have, Scale model steam boats by Philip Vaughan Williams. it should be available your side of the pond. You will also have to find a supplier for the valves, pipe & connectors. I use Polly Model Engineering. ( in U.K.) I did install one off my steam boats with a pump, but have removed it, The problem being I have not found a reliable means of automatic control. I now hand pump after 20 minutes running if I wish to continue sailing. The photo shows the set up. Black arrow, bypass valve, silicone flow & return pipes. Purple arrow the pump. Blue arrow is the clack this is horizontal, but I had to fit a stop valve Yellow arrow. The ball wouldn't rest on the seat in the clack until there was pressure in the boiler. Worked a lot better vertical with the supply at the bottom.

Thanks for your response. I am very green on the field of steam boilers and engines, but eager to learn. The motor is a 2V oscillating cylinders. I bought these on eBay and is from China. Hope that this information can help you in response to my question.
Best regards,
Luis


http://i.ebayimg.com/00/s/Nzk0WDEyMDA=/z/xMsAAMXQVERSx8tL/$_14.JPG


http://stores.ebay.co.uk/Microcosm-Engine

Not much information as to what pump or what engine? But you will need a clack valve ( non return valve ) fitted in a bush on the end of the boiler. Between this & the pump a bypass valve to return excess water back to the water tank.