Model Boat Mayhem
The Shipyard ( Dry Dock ): Builds & Questions => Steam => Topic started by: paull on October 20, 2016, 07:08:59 pm
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hi everyone, new to the forum so im sorry if this has already been covered.
ive recently bought another steam boat that dose not have a gauge on it and there is not have a spare connection point on the boiler to mount one, is it possible to put one on the steam line from the boiler to the engine
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There is no mechanical reason you couldn't fit a pressure gauge in the steam line, plenty of industrial applications have pressure indication at several points away from the boiler. But, they all have pressure indication at the boiler as well.
There is a BIG however though:
Putting the PG in line means you will not be seeing the true pressure inside the boiler, as is required for certification.
The stop valve on the boiler could induce a small pressure drop as the steam flow crosses it, and, depending on the length of the steam pipe, there is a possibility of a further small steam pressure drop created by resistance to flow.
Ian
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You need to make a small manifold to screw into an existing bush. Two ports in the manifold one for the pressure gauge , the other for the ordinal fitting, be it steam cock or safety valve.
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Steam accumulation tests are carried out "statically" (i.e. with no steam flow) thus if the gauge is between the boiler and the steam stop valve there is no problem. The boiler inspector will satisfy himself that there is no steam flow. Keep it simple.
Keith