High Performance Steam Conditioning Technology

CCI’s VST-SE valve is now enhanced to include Class V shutoff capabilities in order to prevent leakage in a wider range of steam conditioning applications.

The VST-SE is a multistage steam conditioning valve that combines the benefits of low noise and vibration levels with high rangeability, typically at least 50:1. VST-SE was designed to provide this improved rangeability even when a multistage pressure reduction arrangement is required to minimize noise and vibration. All spraywater injection takes place after the final steam pressure reduction stage, avoiding risk of erosion and cracking of valve body and internals.

The VST-SE also utilizes the inlet steam to atomize the cooling water. This steam atomization principle provides a cooling system whose performance is independent of the steam flow velocity at the water injection point. Thus it is insensitive to the downstream steam velocity from the water evaporation point of view. VST-SE has a unique patented design solution for control of the atomizing steam, creating the high system rangeability.

The VST-SE is developed with the capability to run in parallel with extraction and back pressure turbines under a wide range of conditions. The valve also does excellent service in industrial and utility power plants for auxiliary steam.

Published in SOLUTIONS Spring 2003