Spherical Disc Valve working principle

Spherical disc valve ,also called segment ball valve ,is designed to convey the solid medium .

The following is Spherical Disc Valve working principle :


The spherical shapped ,quarter -turn valve has no sliding seal to leak and operation well after installation .There are 3 phase when the valve in working stage .including valve open ,valve closing and fully closed.

Valve totally open:
Material falls unobstructed through the inlet opening. Nothing is in the flow stream to cause product bridging, so you get the full flow capacity of the valve. Notice that the sealing surfaces are protected from direct contact with material.

Valve  closing:
As the valve begins to rotate closed, the dome wipes against the seat, cutting off the flow of product and pushing material above or below the valve instead of wedging it between the dome and seat. The design naturally resists abrasive wear and there are no pinch points or places for material to hang-up.

 Valve Fully closed:
Closure is clean and the valve is fully seated. The dome and seat form a positive seal that eliminates leakage across the seat. Double O-rings prevent leakage through the stems.