Fisher 3990 1/2" M Inlet Atmospheric Vacuum Breaker
Shop all Fisher Breakers, Valves & Preventers
- SKU:
- 3990
- MPN:
- 3990
Commercial design services
Discover a whole new degree of kitchen customization with our proven idea-through-installation model. Learn more
Fisher 3990 1/2" M inlet atmospheric vacuum breaker protects potable water systems from backflow and siphonage.
- Meets CSA safety standards
- Durable for commercial use
- Suitable for faucets, sinks, and drains
- 1/2" M inlet for plumbing compatibility
- Compact 3.5 pounds for easy install
- Atmospheric design prevents backflow
