800X pressure difference balance valve bypass for the air conditioning system supply and return water to balance the pressure between the valves, can improve the utilization of the system to maintain a constant pressure of the exact value, and to minimize system noise and excessive pressure, damage to equipment. 800X pressure difference balance valve is superior to other balance valve bypass, it does not require the implementation of other machinery, relies entirely on the media to achieve their own equilibrium pressure difference function, energy conservation and installation of floor space. 
 Shape and size of the main connection 

 DN 50 65 80 100 125 150 200 250 300 350 400 450 
 L 203 216 241 292 330 350 495 622 698 787 914 978 
 H1 160 180 200 270 310 320 370 430 480 525 580 635 
 H 610 625 642 750 808 864 1135 1185 1325 1385 1445 1445