... 40 seconds, do 450 cycles continually. No leakage after cold/hot water cycle testing. Life cycle testing:According to the EN817,GB18145 ... -2003 standard test more than 70,000 cycles (hot water temperature: 65±2o,cold water temperature: ≤30o,pressure: 0.3±0.05Mpa); According ... -2005 standard test more than 500,000 cycles (hot water temperature: 66±6o,cold water temperature: 10±6o,pressure: 0.3±0.05Mpa ...