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Exhaust connection on cylinders between frames

Detail for fitting of exhaust outlet in the top of the steam chest

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14/01/2013 14:11:09

Hi Folks,

I am interested to know what people favour for fitting of an exhaust outlet in the top of the steam chest when cylinders are between the frames. The system I have in mind at the moment, is where a hollow 'exhaust fitting' sits between the valves in the middle of the steam chest. The bottom end of this fitting is screwed home in the exhaust port in the top of the cylinder block. The threaded upper end of the fitting protrudes by about 1/2" from the top of the steam chest cover. The hole in the steam chest is clearance only and is not threaded. On top of this, a threaded 'exhaust flange' is screwed home over the end of the exhaust fitting, seated on joint sealant, and the fixing completed by fixing this flange to the top of the steam chest cover with a 6BA screw. The blast pipe can then be screwed over the remaining protruding thread.

Fixing the steam pipe is simpler as there is not the issue of multiple seals; a simple threaded hole in the top of the steam chest cover and the usual union to the steam pipe.

I would be grateful for your thoughts; do you have better ways of doing fixing the exhaust pipe?

Many thanks,
Dave

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