Device and method for operating at least two valves

摘要

A valve device (10, 100) and a method for operating at least two valves (28A and 28B), or 128A and 128B) is actuated by an actuator (25, 27; 25', 27') and arranged for controlling fluid flow in at least two separate fluid lines (12A, 12B). The two valves are preferably diaphragm operated valves. The valve device includes a pressure release mechanism constructed to change pressure in a diaphragm chamber of each diaphragm operated valve and thereby open or close the valve.