C-Ball Valves
Advanced ball valve designs delivering performance and profitability improvements over traditional designs
Advanced ball valve designs delivering performance and profitability improvements over traditional designs
A double eccentric C-ball valve is similar in principle to a conventional ball valve, but with a half ball that makes a “C” shape. This C-shaped ball is offset on two planes to allow a double eccentric motion that achieves sealing by cam effect against a fixed seat.
Emerson’s advanced AEV design provides superior sealing performance, eliminates the problematic conventional ball valve cavity and lasts longer with an open and closing action that is contactless until the point of sealing.
This design enables tight sealing that is independent of process pressure and eliminates the need for springs or dynamical seals between the seat and body that are often the root cause of reliability issues in conventional trunnion mounted ball valves.
Emerson’s advanced design provides superior sealing performance and reliable operation with minimal maintenance cost.
Enabled by a unique “C” ball shape and double eccentric design, the ²XC ball valve acts along two vectors of movement to allow opening and closing of the valve without friction or wearing at the seat and “C” contact.
The C-Ball convex-to-convex sealing mechanism is distinctive. During the sealing action, the C-Ball sweeps particles away rather than pressing them against the valve seat. This design prevents particles from becoming trapped between the seat and the ball, which is crucial for achieving excellent sealing in difficult media containing particles.
Sealing energy is transmitted through the stem and against a fixed seat, eliminating the need for lipseals, springs, or dynamic seals. This results in superior, reliable, uniform sealing performance at high and low pressures in an inherently fire safe design.
The C shape also eliminates the ball cavity of traditional valves, removing the risk of catastrophic failure due to the expansion of unstable trapped product in a true bi-directional design.
Run your processes for longer with the double offset design that minimizes wear. In critical service, the seal design also ensures no media can accumulate and harden between the seat and body, preventing a leading cause of valve failure.
