Prices, Promotions, styles, and availability may vary. Our local stores do not honor online pricing. Prices and availability of products and services are subject to change without notice. Errors will be corrected where discovered, and Lowe's reserves the right to revoke any stated offer and to correct any errors, inaccuracies or omissions including after an order has been submitted.

Backflow Preventers & Vacuum Breakers

51 results

Watts 
1/2-in Bronze Backflow preventer

  • •For use in commercial and residential hydronic heating systems
  • •Pre-assembled unit
  • •All bronze body construction with solder connection
Find My Store

for pricing and availability

  • Zurn Wilkins 112-375XLB 1-1/2-in Bronze FNPT Backflow preventer

Zurn Wilkins 
1-1/2-in Bronze FNPT Backflow preventer

  • •EZSwap® pressure vessel is removable for easy access and added convenience
  • •Flush tool (flush) provides easy line flushing, saving up to 15 minutes per installation
  • •Durable UV resistant reinforced nylon EZSwap pressure vessel resists corrosion and mineral build-up to better withstand harsh conditions
Find My Store

for pricing and availability