Pneumatic O type (fixed ball) cut off ball valve is one kind of pneumatic quarter-turn type cut off valve. It mating use with electromagnetic valve and valve position switch box,can realize remote cut off control. O type fixed ball valve adopt that designed plan in which structure is that by front and behind valve shaft fix valve core and moveable seal seat, therefore its start and stop torque is small, open is flexible, operation is more stable. Have automatic compensation function, when between bidirectional seal valve seat is closed rotation, have very large shear force and self-cleaning function, especially apply to control on-off for fiber suspension liquid and resisting medium which included small solid graininess.

Pneumatic O type cut off valve is one kind of pneumatic quarter-turn type cut off valve. It mating use with electromagnetic valve and valve position switch box, can realize remote cut off control. O type ball valve adopt integral valve core, valve stem design plan, ensure closed operation, stop valve stem wear. Adopt bidirectional metal hard seal structure, bidirectional seal leakage rate is small, suitable use temperature scope is large. when valve core and hard seal valve seat closed rotation have very large shear force and self-cleaning function. Especially apply to control on-off for fiker suspension liquid and resisting medium which included small solid graininess.