Store the barrier fluid and maintain a pressure differential between the barrier fluid and the medium. The medium pressurizes the isolation fluid through a piston. The isolation fluid is pressurized according to the fixed transmission ratio of the pressurized tank. The maximum working pressure in the pressurized tank is 6.5Mpa.

The welding of all pressure-bearing parts is performed in accordance with JB / T4709-92. Use butt welding or double-sided butt welding.