Speakman SentinelPro Series thermostatic / pressure balancing valves are ideal for precise control over water temperature and pressure in commercial buildings, healthcare facilities and hospitality establishments. These valves prevent scalding or freezing water and feature a temperature limit stop for setting a maximum temperature level. These valves have solid brass construction for enhanced durability. These SentinelPro valves offer flow rates down to 1.35 GPMl for use with low-flow shower heads down to 1.5 GPM. They further come with sweat & thread connections for ease of installation and leakproof operations.