Zook ProVAC Rupture Disc – Low Pressure

The Zook ProVAC Rupture Disc is a bi-directional rupture disc designed to provide vacuum protection and prevent overpressurization for processing and storage tanks. The assembly design allows ultra low-pressure relief in the vacuum direction (starting at 1″ of water column differential). The assembly may be specified to protect equipment from overpressurization.

• Vacuum Relief ratings from 1″ WC to 30″ WC
• Temperature ratings to 500°F (260°C)

How ProVAC Works:

Vacuum Relief: Controlled by the Girdle.
As the pressure in the system approaches the vacuum burst setting, the seal presses against the girdle, deflecting it towards the knife blades built into the inlet holder. As the girdle passes the knife blades, the seal is cut relieving the negative (vacuum) pressure. The laser cut holes in the Burst Cap or Pressure Cap provides optimum flow when the rupture disc relieves in the negative (vacuum) direction.

Positive Pressure Relief: Controlled by Metal Top Section.
The Burst Cap, under tension loading, relieves positive pressure when pressurization occurs in the system.

ProVAC Series Disc Holder

• Insert type Rupture Disc Holder – designed exclusively to be used with the ProVAC Series Rupture Disc
• Permanently attached stainless steel nameplates are standard. Nameplates indicate flow direction and provide visual verification that holder assembly is properly oriented in the piping system.