The RT-1004 series self-actuated regulator has a variety of two-way, single-seated and double-seated valves, and direct, reverse-acting and three-way valves.
Other features include:
Extra large actuating bellows for narrowthrottling band
More power for greater sensitivity and longer valve strokes
Approx. 45°F spans between 35°F and 425°F
Manual Model RT-1004