Caleffi 521619AC Thermostatic and Pressure Balanced Mixing Valve

The Caleffi 521619AC Thermostatic and Pressure Balanced Mixing Valve delivers safe, reliable hot water for residential and commercial installations. This 1" sweat‑connection mixing valve from the Caleffi 521619AC line combines sophisticated thermostatic control with a pressure balanced design to maintain a constant outlet temperature even during pressure or supply temperature changes.

Built from low lead brass and featuring an included adapter and temperature gauge, this valve meets modern plumbing codes while simplifying installation. Its compact form fits a wide range of plumbing configurations, reducing hot water fluctuations and scald risk.

• Thermostatic control ensures precise temperature regulation for comfort and safety
• Pressure balanced design prevents sudden temperature swings during incoming pressure changes
• 1" sweat connections for easy, solder-free installation
• Check valves protect against backflow and cross‑contamination
• Low lead brass construction meets code requirements and long-term durability
• Adapter and temperature gauge included for straightforward setup and monitoring

Choose the Caleffi 521619AC for trusted performance in showers, sinks, and radiant systems where consistent water temperature is essential.