This allows for much more control because on the tapered opening from aoaltwar's blog

A V port ball valve has the 'v' shaped ball or possibly a 'v' shaped seat. This allows for linear and in many cases equal percentage flow characteristics. When the valve is within the closed position and opening is commenced small end with the 'v' is opened first allowing stable flow control throughout this stage view this site . This type of design has a generally tougher construction caused by higher velocities from the fluids, which could damage a regular valve. When machined correctly they are excellent control valves, offering superior leakage performance.

Many industries encounter challenge with residues from the ball valve. Where the fluid is intended for human consumption, residues are often health hazard, and once where the fluid changes every once in awhile contamination of 1 fluid with another may occur. Residues arise because inside half open position on the ball valve a gap is done between the ball bore and the body where fluid is usually trapped. To avoid the fluid engaging in this cavity, the cavity must be plugged, which is usually done by extending the seats in that manner it's always in experience of the ball. This type of ball valve is termed Cavity Filler Ball Valve.

When you'll need precise control of your application, a globe valve are often more accurate over a ball valve. Globe valves are seen as the industry standard for control valves since they are good at regulating flow, whereas ball valves are better for on/off control without pressure drop.

V-Port Ball ValveIf you need to use a ball valve to master your process, you might like to consider several types of ball valves depending on the application for more . A trunnion or v-port ball valve will work better and invite for more accurate adjustability in a few scenarios.

Trunnion ball valves come with an additional mechanical anchoring from the ball towards the top and bottom. They employ a splined or keyed stem connection that eliminates any play relating to the ball and stem. V-port ball valves use a ‘V’ shaped ball instead with the standard round hole. This allows for much more control because from the tapered opening, allowing for further linear flow.

In-Line Repair. You can repair 3-piece valves without complete removal through the line, unlike 1- and 2-piece ball valves. Simply remove three with the four cap screws on both sides, and the body swings out for replacement on the seats and seals.
Protected Seat. The Tri-Pro Series valves feature a protected seat and encapsulated body seal design. This isolates and protects the seats and seals on the flow path, preventing cold flow and allowing long-term performance in demanding applications.