January 2006
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HP Reliability: Consider bidirectional flow devices for mechanical seals
Many dual mechanical seals found in centrifugal pumps use either pumping rings or pumping screws to move barrier fluid. Typical flowrates achieved with pumping rings are extremely low, with most of th..
The Author
Heinz P. Bloch resides in Montgomery, Texas. He retired as Exxon Chemical’s Regional Machinery Specialist for the U.S. and has authored or co-written more than 780 publications, among them 23 comprehensive books on practical machinery management, failure analysis, failure avoidance, compressors, steam turbines, pumps, oil mist lubrication and optimized lubrication for industry. Mr. Bloch holds BS and MS degrees (cum laude) in mechanical engineering from the Newark College of Engineering (NCE). He is one of 10 inaugural inductees into NCE’s Hall of Fame, which honors its most distinguished alumni.
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