Eccentric crank 
The use of eccentric principle that the body and the crankshaft center flow channel different heart works. Valve in the closed process, gradual spherical cap on the valve seat, close to the moment to achieve a reliable seal, to avoid sealing the valve opening and closing process is always friction state;

Dome structure 
Hemispherical ball valve, the valve open ball crown hidden in the valve chamber, the media directly from the sealing surface erosion; while ensuring the full passage of the valve flow, to minimize energy loss, head loss is almost zero;

Double sealing 
Using a special process method, finishing fine grinding of sintered stainless steel ball crown to move Viton seals, with soft and hard two kinds of sealed, even in the soft seal for wear or damage to the case can achieve a reliable seal. For the caliber of less than DN250 eccentric half ball seat of this structure;

Effort bearings 
Upper and lower stems are equipped with thrust bearings, composite bushings, reducing the drive torque, the electric actuator of choice, highlighting the advantages;

Small installation space 
Valve installation height is less than the same size gate valve with butterfly similar structure length is less than the same size and butterfly valve is also similar and the flow direction and the installation is not limited installation space can be installed at any angle; available on-line service, maintenance, without detachment pipeline.