Ramén KS Ball Sector Valve vs. V-port ball valves

While V-port ball valves are commonly used in HVAC and light-duty throttling applications, they often fall short in demanding conditions.

The Ramén KS Ball Sector Valve offers superior performance in abrasive, corrosive, and high-pressure environments – delivering reliable modulation, extended service life, and lower total cost of ownership (LCC).

The Ramén KS Ball Sector Valve is ideal for

• Clean water applications with ambient temperature and low differential pressure (also suitable for V-Port in basic HVAC systems)
• Processes with variable pressure drops
• Handling abrasive or corrosive media
• Applications where cavitation risk needs to be addressed (trim-dependent)
• Installations where easy field maintenance is required

Why Ramén KS Ball Sector Valve wins in industrial environments

Reliable throttling at varying pressure drops
Ramén valves retain consistent control due to their equal percentage characteristic, unlike linear
V-port valves which act more like on/off valves under high Delta P.

Unmatched rangeability (up to 300:1)

Clog-free design
No internal cavities -fully self-draining – avoiding wear from trapped media or thermal expansion. V-port valves cannot be used if media can crystallize or expend during temperature change.

Backlash-free actuation
The trunnion-mounted sector eliminates backlash under pressure fluctuations, improving control repeatability over time. Due to their floating design, v-port ball valves have high hysteresis leading to poor controllability.

Elliptical flow geometry for particle handling
The unique elliptical opening reduces erosion and clogging, unlike sharp V-notches that wear or block easily.

Sealing integrity in both directions
Ensures bidirectional tight shut-off, providing safety and flexibility in piping layout.

Sealed bearings = consistent torque
Upper and lower shaft O-rings protect against media ingress, preventing bearing wear and torque instability, a common failure in basic V-port designs.

Conclusion: Ramén KS Ball Sector Valves offer best in class industrial control

For clean water, process liquids, or challenging media, the Ramén KS Ball Sector Valve delivers robust, repeatable, and low-maintenance performance that V-port valves simply can’t match in industrial settings.

When you need precision, reliability, and minimal lifecycle cost, Ramén KS Ball Sector Valve is the proven choice since 1945.