Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

As requested, I have finally got around to posting some photo's of the two #20's I have that are fitted with the stuffing box type valve.

First up is a power plant that is of 1986 vintage. You will notice that this one is fitted with two screws, and two rivets in the side of the valve chest, and the "O" ring gland in the valve stem.

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The second #20 is also a power plant, and is of 1985 vintage. This engine was once a resident of the Temple of Steam.
You will notice that this engine is fitted with four screws in the side of the valve chest, and has the same "O" ring gland in the valve stem as the previous engine.

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I am sure this will all add to the mytery of the Jensen #20 steam chest design.