Pressurized barrier fluid circulation through reservoir .
Fluid is circulated by a pumping ring in the dual seal
Isolate process fluid .
Zero process emissions .
Used with dual pressurized seals .
High vapor pressure fluids ,light hydrocarbons .
Heat transfer fluids
Dirty /abrasiveor polymerizing fluids
Mixers /agitatorsand vacuum service .
Piping loop must self-vent to reservoir located at highest
elevation .Pressurize reservoir at all times ,maximum gas
charge 10 -14 bar ( 150-200psi ).Barrier fluid must be
compatible with process .Reservoir level indicator shows
both inboard and outboard seal leakage .