butterfly valves air pressure regulator ball valves BUTTERFLY VALVES Cashco, Inc. now offers both rack and pinion (400 Series) and scotch yoke (200 Series) actuators as standard options for the Ranger QCT eccentric plug valve and Premier lined and unlined butterfly valves. This is ideal when small envelope size is required, and quick response times are necessary. These can be mounted with the Moore 760 Valve Pac Positioners, the Siemens PS2 Smart positioners, or solenoid switches.