The function of the PBS system is similar in principle to the BFS system. The difference is that the barrier pressure is created by the reference pressure without any additional superimposition of nitrogen. The pressure booster is for storing and cooling the barrier fluid. Pressurization is by means of a piston in dependency on the process/medium pressure. Automatic pressure increase in accordance with the transmission ratio.
Circulation in accordance with API 682 / ISO 21049: Plan 53C
PBS system is employed for applications in sealing systems with a wide variety of operating parameters for supplying quench buffer fluid to double and tandem mechanical seals. PBS system is equipped as a standard with all the necessary system connections and brackets. Modular design combination available with a wide variety of system components.
The maximum operating pressure of the PBS system applies to the housing of the pressure booster, i.e. the process/medium pressure at the connection must be lower and is conditional on the transmission ratio.