521616A | Mixing Valve MixCal 521 Adjustable 3-Way Thermostatic with Gauge 1 Inch Low Lead Brass Press Union 200 Pounds per Square Inch | Hydronic Caleffi Connection Details_1/4IN The serrated surface digs into

The serrated surface digs into the material

this diffuser features a 14x14 inch face size and an overall dimension of 17x17 inches

The Apex 525 delivers exceptional air circulation

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521616A | Mixing Valve MixCal 521 Adjustable 3-Way Thermostatic with Gauge 1 Inch Low Lead Brass Press Union 200 Pounds per Square Inch | Hydronic Caleffi Connection Details_1/4IN The serrated surface digs intoMixing Valve MixCal 521: Hydronic Caleffi Mixing Valve MixCal 521 is an adjustable 3 way thermostatic valve with a gauge. It features a 1 inch low lead brass press union and a pressure rating of 200 PSI. This valve is designed for use in plumbing and hydronics applications, such as controlling the temperature of mixed water in radiant floor heating systems. The Mixing Valve MixCal 521 is made of high quality materials and construction, ensuring