SR502-5 2 Zone Switching Relay w/ Priority 319143-204 The SR501 single zone switching

The SR501 single zone switching relay is UL and CSA listed

The control allows for multiple mixing options including injection

BTH ULTRA/ MINI Ultra

4" Z-Vent Horizontal Termination Tee

Malco’s FBSN Pex Foam Board Stapler is the ideal solution for installing in-floor radiant heating

SR502-5 2 Zone Switching Relay w/ Priority 319143-204 The SR501 single zone switchingThe 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.