🔒 Lock in Efficiency with the Zone Sentry! Designed for straightforward setup and maintenance. Built to last with high-quality materials. Crafted for optimal performance and reliability. Ideal for a variety of HVAC systems. Achieves a Cv of 10.3 for superior fluid dynamics. 2-Way Functionality 3/4" Valve Size Made in USA The Z075C2-1 Zone Sentry is a high-performance 3/4" 2-way sweat valve designed for 24VAC systems. Engineered for reliability, it features a normally closed design and boasts an impressive Cv of 10.3, making it perfect for efficient flow control in various HVAC applications.