We have used Evsco polypropylene electrically actuated valve Model 543-PP-RE1 for over 15 years in our leaching/extraction process. This process uses hot, synthetic seawater for a multi-day extraction procedure. For regular de-scale operations we use 10-15% HCL (Hydrochloric acid) rinses followed by high-purity water rinses.
The 523-PP-RE1 value has never hesitated, stuck in position or failed during its 15 years of service. We have found this amazing considering other valves have long since been scrapped. We are installing your 523-PP-RE1 and 543-PP valves on our recirculation/filtration/reclaim system which will save thousands of gallons of water daily.