New, patent pending Q-Disc design features extreme flow balancing for control service. Dynamic torque effect from the flow has been significantly reduced allowing high pressure drop service. Design also provides market leading noise reduction even up to 12 dB.
Q-Disc design features
A simple but effective design enables balanced flow without affecting valve performance. The design is suitable for all available body types and face-to-face lengths and with a wide temperature range (up to +600 °C) which makes Q-Disc the most versatile flow balancer on the market.
• Next-generation flow balancing for high-performance butterfly valves
• Minimizes dynamic torque load in a superior manner
• Enhanced noise reduction capability
• Excellent control performance and high capacity
• Modular add-on for LW, LG and L6 Model D valves
Q-Disc is designed to balance the torque effect caused by the flow. In standard offset designs, flow causes dynamic torque effect caused by uneven pressure across the disc surface
With Q-Disc, the pressure is distributed more evenly resulting in lower torque requirement and more effective control of flow.
|Size range:||DN 80 - 300 / 3" - 12"|
|Temperature range:||upto + 600 °C|
|Pressure classes:||PN 10 - 40 / ASME 150 - 300|
|Cv range:||196 - 5720|
History of the Neles Q-Trim technology
May 4, 2021
One of our best-known flow control brands, Q-BALL™, has its roots in 1978 when a French “valve expert” Roger Bey presented his low noise and anti-cavitation solution developed for the ball valve to Antti Nelimarkka, the founder of Neles company (now Valmet's flow control business line). Q-BALL was the very first brand in famous Q-Trim™ technology aiming to reduce noise in control valves.
Q-disc™ – Born to perform under pressure
Jun 20, 2022
Valmet’s Neles™ Q-disc™ flow balancing trim is all about reducing noise and taking off some of the pressure directed onto the disc and shaft of a butterfly valve. It is able to do both things with great efficiency and reliability thanks to unique features such as the perforated design and fixed integration onto the disc.