521519A | Mixing Valve MixCal 521 Adjustable 3-Way Thermostatic with Gauge 3/4 Inch Low Lead Brass Sweat Union 200 Pounds per Square Inch | Hydronic Caleffi SubType_Hydronic Specialties With its precise engineering

With its precise engineering

providing exceptional performance and reliability

Its smooth surface finish and low friction design minimize wear and extend the product's lifespan

With its ease of use

Featuring a robust construction

521519A | Mixing Valve MixCal 521 Adjustable 3-Way Thermostatic with Gauge 3/4 Inch Low Lead Brass Sweat Union 200 Pounds per Square Inch | Hydronic Caleffi SubType_Hydronic Specialties With its precise engineeringMixing Valve MixCal 521: Dependable Temperature Control for Hydronic Systems The Hydronic Caleffi Mixing Valve MixCal 521 is an adjustable 3 way thermostatic valve designed to deliver precise temperature control in hydronic systems. Engineered with a 3 4 inch low lead brass body and sweat union end connections, it ensures durability and reliable performance in various plumbing and hydronic applications. Featuring a built in gauge, the MixCal 521