Three eccentric butterfly valve features

1. Dual safety construction

Tritec strictly follows the API609 specification, in order to prevent deformation of butterfly plate, valve stem dislocation, sealing surface occlusion caused by the influence of fluid pressure and temperature, two independent thrust rings are installed on the upper and lower sides of butterfly plate respectively, so as to ensure the normal operation of the valve under any working conditions.

At the same time, in order to prevent unexpected accidents caused by stem breakage and flying out caused by unknown reasons, a separate stem flying out mechanism is designed at both the inside and outside of the lower end of the valve, which also ensures that the pressure rating of Tritec can reach up to 2500 pounds from the side.

2. No dead zone design

Tritec considered in the design process, especially the application in the field of control problem, make full use of the sealing principle of triple eccentric butterfly valve, do butterfly plate don't scrape the seat when the valve switch, valve stem torque by butterfly plate passed directly to the sealing surface, that is to say, almost no friction occurs between the butterfly plate and valve seat, thus put an end to the open ordinary valves are common jump phenomena, the eradication of the low opening scope of valve internal friction caused by all kinds of unstable factors such as regulation cannot phenomenon, namely the eradication of the dead zone (belt), which means Tritec can from almost zero The normal control ratio is more than 2 times that of the general butterfly valve, and the control ratio can be as high as 100:1. This for Tritec used as control valve to create a good condition, especially in the large diameter, the cost of the cut-off valve is extremely high, in addition, the cut-off valve can't achieve zero leakage, in need of emergency shut off the side, must be in the cut-off valve during install shutoff valves, and Tritec regulation and shut off at a suit, its economic benefit is very considerable.

3. Body seat construction

There are two kinds of valve seat installation structures for three-eccentric butterfly valve. Most of them are installed on butterfly plate for convenience, but Tritec adopts the body seat structure and installs the seat on the body. Its advantage is compared with disc seat, greatly reduce the opportunity of direct contact with the medium of the seat, thereby reducing the degree of seat erosion, prolong the service life of the seat.