I'm looking for a valve for a Pickering governor valve as per the drawing below. It's to fit my 1925 Marshall S type compound 4nhp. I'm looking for a valve 1" 1/4 in diameter, not 1" 1/2 as drawing. The drawing I've got isn't quite the correct one for my engine. I've got the complete governor assembly already on the engine, and the sleeve is already in the block, just short of the valve.
Also, if anyone has a drawing for the Govenor set up for my engine, It would be greatly appreciated.
Many thanks.
Arial.