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- 产品描述
-
What
Recirculation from seal chamber to pump suction through
orifice .
Standard flush plan on vertical pumps .
Why
Continuous seal chamber venting on vertical pumps .
Seal chamber heat removal
Where
Vertical pumps .
Seal chamber pressure is greater than suction pressure .
Moderate temperature fluids with moderate solids .
Non-polymerizing fluids
Preventative Maintenance
Vent piping loop prior to starting vertical pumps .
Use an orifice with a minimum 3 mm ( 1/8inch )diameter .
Calculate flow rates to size orifice for adequate seal chamber
flow .
Reduce seal chamber pressure with proper orifice and throat
bushing sizing
Typical failure mode is clogged orifice check temperatures
at pipe ends
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