www.pmmag.com/articles/85620-piston-operated-flushometer
Piston-Operated Flushometer
April 1, 2002
The piston-operated GEM 2 from Sloan Valve Co. features a non-hold open handle that controls water usage, and the Flushometer has no external volume adjustment, promoting water conservation. An O-ring-protected, filtered metering by-pass orifice ensures low-maintenance even in the harshest water conditions.
Circle 20