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Avantech - Model HVV & URV -High Velocity Vacuum and and Ultra- Rapid Vacuum Dewatering Systems
The air-operated diaphragm (AOD) pumps used for "pump-and-wait" dewatering draw a vacuum and also a low volume of air. Water that collects in and around dewatering internals is pulled into and through the dewatering piping. Any air entrapped in the system may prevent the water from being pulled up and out of the piping unless there is a good water seal on the internals. When this seal is broken, any water entrained in the unit will drop back down the piping into the container. For many applications, this process scheme may be adequate, but sometimes the demands are greater.
The HW™ Method
The HW™ system enforces assured regulatory compliance. By providing a stronger vacuum force, the HW™ can offer shorter process periods with the economy and simplicity of conventional dewatering. This powerful vacuuming action pulls any water near the internals into the piping and sweeps it out of the container the same way a shop vacuum removes water off the floor. This unit provides a faster operation due to its high flow capabilities. The HW™ system is less complex, more economical, and more effective in meeting disposal site free-standing liquid (FSL) requirements than other dewatering methods.
The URV™ Method
The URV™ system incorporates the advantages of the HW™ plus the addition of dry conditioned air that allows for "ultra-rapid" dewatering and significant time savings. This automated system can be mated with a standard or a remotely operated fill-head for additional radiation dose savings, enhanced operator safety, and ease of use.