Sedelon? Top-entry Ball Valves
Top entry ball valve is mainly used in pipeline and industry system. It has top entry and on line maintenance function and many other advantages, such as small fluid resistance, simple structure, small volume, light weight, reliable sealing, convenience for operation and maintenance, quick and flexible opening and closing.
Top entry series ball valve with trunnion mounted ball, which is ground, polished and hard face treated on the surface. The ball and stem is integrated, sliding bearing is installed on the external bore so that the friction radius is small and operation torque is very low.
It is possible to remove the bonnet of the Top-entry valve allowing free access to the body cavity without dismantling the valve from the line. A set of special maintenance tools permits to take out both ball and seat-rings; this maintenance operation requires very little space around the valve, thus allowing it in areas where space is a limiting factor.
Top Entry construction is available in forged or cast execution, one piece symmetric body closed by a bolted bonnet. The range includes both full and reduced bore, pressure ANSI class from 150 to 2500 , with all possible combination of ends connections: flanged (RF-RTJ), butt welding and HUB ends.
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