For easy retrofit and drop-in replacement, Caleffi adds the optional SAE Flare end connection for its Z-one™ zone valves. The SAE Flare connection is available for 2-way and 3-way diverting applications. Quick order assemblies combine the SAE Flare end connection with a 24V normally closed actuator complete with a new auxiliary switch design that features hermetically sealed electrical contacts allowing valves to operate reliably in harsh environments requiring no minimum current load. Caleffi offers a complementing flare nut with attached copper sweat tail piece for new installations.Caleffi – Creating innovative, superior performance products that help customers live comfortably and economically, while softening their impact on the environment.