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- 产品描述
-
What
What
Fluid is circulated by a pumping ring in the dual seal
assembly .
Why
Outboard seal acts as a safety backup to the primary seal .
Zero to very low process emissions .
No process contamination is allowed
Where
Used with dual unpressurized seals .
High vapor pressure fluids ,light hydrocarbons
Hazardous /toxicfluids
Heat transfer fluids
Preventative Maintenance
Piping loop must self-vent to vapor recovery /flaresystem
near atmospheric pressure .
Process vapor pressure generally greater than reservoir
pressure .
Buffer fluid must be compatible with process leakage .
Primary seal leakage is indicated by increased vent pressure .
Reservoir level indicator shows outboard seal leakage .
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