Siemens 171A-10305 1/2" 2-way Ball Valve Assembly NSR 4Cv 24V

The Siemens 171A-10305 is a compact, efficient 2 way ball valve that features an economical solution for control of water flow in HVAC systems. This well made brass valve has a 1/2" connection size and runs on a 24V AC power source. Tight shut off and smooth operation is guaranteed by its ball design, and its 4Cv flow coefficient provides precise flow control. It is for both convectors and fan coil units as the system efficiency and performance are maximized over the whole system. The valve provides sufficient control over water flow to allow for more comfort and consumption of less energy in each area temperature modified to exact standards.