The Circuit Solver line with an integrated union and optional built-in check valve as well as a complete assembly. This product will also be NSF 61 certified. It also minimizes flow through the system by only allowing small amounts of water to pass through once the set point is reached, which reduces system wear and allows for a smaller circulator that won’t consume as much power. The stainless steel union features an integrated O-ring for a hand-tightened leak-free seal. The assembly adds isolation valves to both sides of the product to create a valve that is leak tested with all the components commonly specified with balancing valves. The isolation valves feature male x female connections to minimize potential leak points, making it the simplest and most efficient valve to install. ThermOmegaTech.