The use of self-help type pressure pneumatic - valve method is what?

Ming jing self-reliance type pressure pneumatic control valve is a kind of automatic constant differential pressure balance valve, hydraulic project condition applied to heating. Such as central air conditioning water system, the support of each user terminal device controlled system independently regulate the elimination of pipe network pressure. one The operation of the situations of using steam: 1. Tighten the filler mouth screw 2. Slowly open the pneumatic control valve before and after the stop valve 3. Adjust the pressure adjusting plate, and observe the pressure met the requirement of the said value. 4. Twist on liquid from the condenser mouth screw 5. Unscrew the actuator vent plug (6). Use head leakage through the liquid mouth join until vent outflow 7. Tighten vent plug, water injection until overflow liquid injection port 2. Using a gas at room temperature or low viscosity liquid situations of operation: 1. Slowly open the valve and globe valve; 2. Unscrew the vent plug, until gas or liquid from the actuator overflow 3. And then to tighten vent plug, pneumatic control valve can work. The size of the required pressure value can be obtained by the adjustment of the pressure adjusting plate, adjust, observe the pressure marking value, action is slow, not to rotate the valve stem to follow