Hi. Thanks for replying. I am putting the boiler under pressure using an outside pump feeding into the boiler through the safety valve entry. On a bit of further playing around water is only coming out of the blast pipe through the cylinders. As MichaelR stated it looks like a regulator seal at fault. However I have no information on the regulator fitted to the Dyak. Is it just fitted to the back head, how is it removed and how do I test and correct the seal. Thanks

Thanks agin for replying. Ok, today I was able to remove the regulator without to much trouble. However I have never seen one like this before. The regulator handle moves just over a 1/4 turn and this must be enough to cover or uncover the holes on the outer sheet. How this all comes apart I have no idea, I can’t see anything offhand.
anyone have any experience of these types. Thanks

Thanks, much needed.