This system meets the API682 standard, is mainly used to provide buffer gas for the plan74 dual face dry gas seal Plan74, dilute the dangerous medium leaking from the main seal and take it to the designated discharge line.
The buffer gas pressure must be lower than the seal chamber medium pressure. It suits for the less volatile hydrocarbon medium above C4.
This system is equipped with pressure and flow display, and the pressure on the discharge line can be remotely monitored by pressure and level switch/ transmitter.
1. Applicable to the occasion where the pressure is stable, the pump outlet pressure is not high, and a small amount of sealing gas (nitrogen) is allowed to leak to the process;
2, Especially suitable for the sealing of toxic liquids, which can reach the zero leakage effect.