
产品展示
PRODUCT DISPLAY
What
Seal flush from pump discharge and recirculation to pump
suction with orifices
Combination of Plan 11 and Plan 13
Why
Continuous seal chamber venting on vertical pumps .
Seal chamber heat removal
Increase seal chamber pressure and fluid vapor margin .
Where
Vertical pumps .
Clean ,non-polymerizing fluids at moderate temperatures
Preventative Maintenance
Use an orifice with a minimum 3 mm ( 1/8inch )diameter .
Calculate flow rates to size orifice for adequate seal chamber
flow .
Increase boiling point margin with proper orifice and throat
bushing sizing
Flush should be directed over seal faces .
Vent piping loop prior to starting vertical pumps .
Typical failure mode is a clogged orifice check temperatures
at pipe ends