So today I removed it, opened it up and realised I could make a sprinkler valve styled piston/diaphragm valve. Reason I didn't go with a diaphragm is because I can't find thin sheet rubber here. Also the regulator came with its own piston valve, sort of...
Modifications I made:
- Tapped the top of the regulator where the screw top would go (which depresses a bolt, on to a spring, on to the piston which adjusts the flow) to 1/8" threads and threaded in a 1/8" x 1/4" mxm nipple.
Added a sealing face to the piston and filled the back with bondo to reduce pilot volume.
Drilled out the seat from 6mm to 8mm (not the threads, but the porting where the piston seals against)
This is it completed with a dummy chamber:
Photos of the valve in pieces
Barrel side (remember, the air has to make a 90 degree turn):
http://i75.photobucket.com/albums/i290/ ... C00394.jpg
http://i75.photobucket.com/albums/i290/ ... C00397.jpg
Chamber side (there are two threaded ports, one for the chamber and one for a gauge):
http://i75.photobucket.com/albums/i290/ ... C00398.jpg
http://i75.photobucket.com/albums/i290/ ... C00399.jpg
Piston housing:
http://i75.photobucket.com/albums/i290/ ... C00405.jpg
Piston:
http://i75.photobucket.com/albums/i290/ ... C00403.jpg
http://i75.photobucket.com/albums/i290/ ... C00402.jpg
http://i75.photobucket.com/albums/i290/ ... C00404.jpg
Completed - Barrel Port:
http://i75.photobucket.com/albums/i290/ ... C00409.jpg