The 20" Vent Valve is designed for high flow ventilation of subsea volumes typically suction anchors, caissons etc. Nominal flow area is 20".
The Vent Valve has 3 different modes of operation:
1. Closed
2. Open
3. One Way Vent Valve
The Valve modes are set by use of a ROV carried torque Tool through the ISO Class 4 torque interface.
In addition to the 3 valve modes, an optional second pressure barrier ring can be installed by use of ROV. This will introduce a full and independent pressure balanced 2.pressure barrier and also protect valve internal parts and material.
Design pressure: 15bar
Design lifetime; 15years submerged.