CAL521519A MFG #: 521519A
  • Brand: Caleffi
  • Type: Adjustable
  • Body Material: Brass
  • Applicable Standard: ANSI/NSF 372, CSA B125.3, ICC-ES
  • Pressure Rating: 200 psi
The Caleffi MixCal™ 521 series three-way thermostatic mixing valve is used in systems producing domestic hot water or in hydronic and radiant heating systems. It maintains the desired output temperature of the mixed water supplied at a constant set value compensating for both temperature and pressure fluctuations of the incoming hot and cold water. The valve has been specifically certified to ASSE 1017 and Low Lead Plumbing Law by IAPMO R&T.
  • Features and More


  • Maintains the Desired Output Temperature of the Mixed Water Supplied at a Constant Set Value Compensating for Both Temperature and Pressure Fluctuations of the Incoming Hot and Cold Water
  • Lead-Free