546197A Caleffi 5461 Discal, DirtMag Series 1-1/4" Sweat.

Air & Dirt separator with magnet. Brass body. Stainless steel float guide pin and linkage.
Glass reinforced nylon internal element. Max. working pressure: 150 psi. Working temperature range: 32 – 250 °F. Particle separation capacity: to 5 μm (0.2 mil). Ferrous impurities separation efficiency: 100%. 1-1/4" Sweat.