Top entry ball valves

 

 

1. Top Entryfor fast, easy, in-line service that simplifies scheduled maintenance and permits emergency entry in minutes just by removing the bonnet. All working parts are accessible for service while the valve body stays fixed in the line. No special tools or training are required.

 

2. Wedge-Seat Designpermits use of a wide range of seat materials. The ball and seats are self-adjusting, assuring leak-tight closure under all operating conditions and valve orientations. Seats are kept in tight contact with the ball to assure an even, non-binding, elastic load on the seats at all pressures, temperatures and at all stages of seat wear.

Consequently, positive leak-tight shut-off is assured for the full life of the seats. Seats are under compression load only and there is no flexing or bending of the seat material.

 

3. Available in a Wide Range of Body and Trim Materials.Body and trim materials include Carbon Steel, Stainless Steel, Titanium, Nickel, Monel, Hastelloy, Alloy 20 and others. Almost any fluid can be handled including liquids, gases, slurries, semisolids, viscous substances and some molten materials.

 

4. Seat Range.VO offers a wide variety of seats, ranging from soft seats (plastics) to full ceramic. This allows the McCannaseal to handle temperatures from -320°F to 1500°F and beyond.

 

5. Ball is Wiped Clean Each Time the Valve is Operated.Ball-seat contact is constantly maintained, extending seat life.

 

6. Backseated Stem-Conical Stem Seals.The stem shoulder design eliminates any possibility of   stem blowout. The double set of stem seals are designed so that increased line pressure will increase stem Sealing.

 

7. Bi-Directional Flow Capability for tight closure in either flow direction.

 

8. Quarter-Turn and Low Torque make VO seal ball valves particularly suitable for remote operations with pneumatic or electric actuators, especially when high cycle frequency is required.