a3546504_culator_Comfort_Valve_Problems__PRICE_BASED_ENGINEERING
[0] TECHNOLOGY [REDYTEMP EFFICIENCY-BASED] Normally-CLOSED Positive Flow control via solenoid and check valve [PRICE-BASED ENGINEERING] 
"Normally-OPEN" crossover valve permits siphoning of hot water line during cold water use
Hot Water Circulator Comfort Valve Problems
PRICE-BASED ENGINEERING