Description

The top entry ball valve is mainly used on pipelines and industrial systems. It has such advantages as top online maintenance function, small fluid resistance, simple structure, reliable sealing, convenient operation and maintenance, rapid on-off operation, flexible opening and closing, etc. The driving modes include manual operation, worm and worm gear transmission, pneumatic operation and electric operation. The connection ends can be flange or butt welding.
Top entry ball valve Features Top entry ball valve Specifications
Full Port Design and Reduce Port Design Design STD: API 6D,BS 5351,ASME/ANSI B16.34
Bolted Bonnet,One-Piece Body Face To Face: ASME B16.10
Top Entry Pattern Type Flange End Connection: ASME/ANSI B16.5
Blow-Out Proof Stem Welded End Connection: ASME/ANSI B16.25
Fire-Safe Durable Construction Size: 1/2″ to 32″
Anti-Static Device Pressure: 150LB to 2500LB
ISO5211 Mounting Pad-Top Flange Fire Safe: API 607
Flanged or Butt Welding Ends Inspection And Test: API598、API6D
Available with all types of actuators

Top entry ball valve Structure features
1. Integral structure
The body adopts the integral structure, so as to ensure that it has enough strength and rigidity under the maximum rated working pressure. The valve trims have been carefully designed and selected to ensure reliability under various service conditions. The sufficient wall thickness and the connection bolts of high strength are very helpful to the maintenance and servicing of valves and are able to endure pipelines stress.
2. Top Entry Structure
The vale adopts the top entry structure. The most distinctive difference between this kind of valve and others is that the online maintenance function can be realized without the need of removing the valve from the pipeline. The seat adopts the concession type seat structure, and the rear end of the seat retainer is set as oblique angle to prevent impurities accumulated on the seat from influencing the concession of seat.