SR506-EXP-4 6 Zone Expandable Switching Relay w/ Priority 319143-464 Elbows are used when a

Elbows are used when a direction change or offset is required in installations

Combined with Taco Zone Valves and Thermostats

Aspen 085/110/155/205

BTH Ultra /Mini Ultra See tables and manual

Universal appliance adapter with back-flow preventer and condensation drain

SR506-EXP-4 6 Zone Expandable Switching Relay w/ Priority 319143-464 Elbows are used when aThe Taco Switching Relay is the best choice for all your zoning needs, with advanced timer and boiler functions, external diagnostic lights, switchable priority and contractor friendly PC board layouts. Combined with the time proven reliability of the 00 family of circulators and thermostats, total system integration is achieved.