1" UNIVERSAL TACO FLO-CHEK

1" TACO UNIVERSAL FLO-CHECKS ARE DESIGNED FOR USE IN HOT WATER HEATING SYSTEMS TO PREVENT GRAVITY CIRCULATION WHEN THE BOILER IS OPERATING,BUT THE SPACE HEATING ZONE IS NOT WANTED.TACO FLO-CHECK ALLOWS TO USE THE HEATING BOILER FOR DOMESTIC HOT WATER THROUGHOUT THE WHOLE YEAR.IN SYSTEMS WITH MULTIPLE CIRCULATOR ZONES,FLO-CHEKS ALLOW HEAT TO FLOW ONLY INTO THE ZONES THAT ARE CALLING FOR HEAT.ALSO,THE THUMB SCREW CAN BE MANUALLY OPENED FOR GRAVITY FEED APPLICATIONS IF THE MAIN CIRCULATOR STOPS OPERATING.DIMS:5"H X 4-1/4"W X 2"D,WEIGHT:2.30 POUNDS,(MADE IN USA)MFG/BOX.