Caleffi’s ASME-registered NA546M Series DISCALDIRTMAG removes air and debris that forms in hydronic circuits, including the removal of up to 100% of ferrous debris. Nonferrous debris gets separated out by colliding with an internal element in the flow stream and settling to the bottom of the separator, while the microscopic ferrous debris gets drawn into and captured by a concentrated magnetic field. A blow-down ball valve allows easy removal of all captured debris.