Having finished the bulk of the build on my steam launch it was time to sort out the gas supply.
I came across a book by Stan Bray and noticed a design for an attenuator and gas regulator by Malcolm Break.
Using the download and the book I was able to make some progress however due to a number of errors in the book and unclear photos on the download I was a bit stuck.
Malcolm to the rescue he provided some helpful information and photos which clarified the design, some a big thank you to a fellow Paddler.
So far so good I still need to locate the pipe inlet and outled pipes and source some suitable synthetic rubber.

Just finished many thanks Malcolm .

Hi PD's.... .....and thanks 'steam up' ...& to Malcom..I am sure many members will be interested in the trial tests & results   ......please let us know the final outcome.......Derek.......

Just tried it out (been busy helping friends with their steam projects) connected it up it works but at too low a prnext step.essure  .
With the adjustement screw fully screwed down steam pressure is still causing the vale to shut early,think a stronger spring is the answer.

Just made the spring and replaced the old one works well a big thank you to Malcolm for the design