Ball valve sealing principle titanium plate

Sealing principle ball varies according to their structure . Common valve structure can be divided into floating ball valve and fixed ball valve two categories. The ball valve stainless steel ball float freely supported on the seat ( see Figure 1-1 ) . Under fluid pressure , the ball in the flow direction of displacement produced , making it more closely in contact with the valve seat sealing surface , i.e. the plastic padlock security seals surfaces than the pressure increases, the seal formed in one side ' while the valve before the valve seat sealing surface than the pressure is reduced accordingly , often do not guarantee seal. Central Fujian fixed balls , sphere having upper and lower shaft, the bearing is fixed in the sphere .
Thus , the position of the sphere fixed : displacement fluid pressure can not make it . However , it is a floating valve , the spring means are pressed against the ball or semi- fluid , to establish bolt security seal pressure . Thus fixed ball stainless steel ball valve can be designed according to the requirements of three seal cable structure : front seat sealing valve , the valve seat seal , front valve seat seal .
Ball by Ball Installation Category:
By Sphere installation, stainless steel ball valves can be divided into four types of roof -mounted , bottom -mounted , side-mounted and mounted and so inclined . Which is essentially a bottom -mounted ball busy with the same top-mounted , due to mounting is not convenient , not much use , it does not introduce separately. For side-mounted stainless steel ball valve , according to different occasions and diameter size , body style there are two integral parts, and split and currency dyad and triad points.