Vacuum Breaker

Definition

A vacuum breaker is an electrical breaker with a space that contains reduced air pressure, preventing backflow and maintaining the safety and integrity of a plumbing or electrical system.

Purpose

Vacuum breakers are used to prevent backflow contamination in plumbing systems and to protect electrical circuits by interrupting the current flow when a fault is detected.

Examples of Use

• Plumbing Systems: Installing vacuum breakers in irrigation systems to prevent contaminated water from flowing back into the potable water supply.
• HVAC Systems: Using vacuum breakers to maintain the integrity of HVAC systems by preventing back-siphonage.
• Electrical Systems: Implementing vacuum breakers in electrical panels to protect circuits from overload and short circuits.

Related Terms

• Backflow Preventer: A device used to prevent water from flowing backward into a clean water supply.
• Circuit Breaker: An automatic electrical switch designed to protect an electrical circuit from damage caused by overload or short circuit.
• Pressure Relief Valve: A safety device designed to protect a pressurized system from overpressure.

Notes

Regular maintenance and testing of vacuum breakers are essential to ensure they function correctly and provide the intended protection against backflow and electrical faults.