800X pressure balancing valve is an air conditioning system between supply / return valves are used to balance the pressure differential. The valve can improve the utilization of the system to maintain accurate constant differential pressure, and minimize system noise, too much pressure and damage to equipment caused. 800X pressure balance valve actuator is superior in that it does not completely rely on the media itself to achieve functional differential pressure balancing system, saving energy and installation space, is an intelligent balance valve valve in other places.