This valve allows free air to be drawn into a vacuum system. A rubber disc seats against the valve body. In the open position it allows air to be drawn into the system at that location. The vacuum breaker valve is also included with our standard vacuum blower package to protect the blower against a high vacuum start blower under a “no-load”, condition, and to allow blower to idle during a “no convey/stand-by”, condition.  The valve is also utilized to “purge”, the conveying line when the feed point into a vacuum system cannot be isolated (e.g., rotary airlock, screw feeder, etc.).

Design Standards

• Carbon steel weatherhood
• Carbon steel line fitting
• Air intake filter element
• Air operator with single solenoid air control valve - NEMA 4 enclosure
• Mounting brackets and interconnecting air lines - factory installed

Optional features

• Stainless steel or aluminum line fitting
• NEMA 7/9 electrical enclosure
• Magnetic air cylinder with reed type proof switches