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boiler feed pump oil leakage

thread407-81593

boiler feed pump oil leakage

boiler feed pump oil leakage

(OP)
sulzer multistage boiler feed pump with oil leakage from DE and NDE bearings knife edge seals renewed run for approx. 4 hrs before leak reappeared has anyone modified these seals or tried wipers etc.

RE: boiler feed pump oil leakage

Ask the pump manufacturer.

Knife edge seal? A cup seal? It could be that the shaft was also worn at the seal point.

RE: boiler feed pump oil leakage

(OP)
The "knife edge seal" is a brass ring calked into a groove in the bearing shells non contact with 0.003" clearance.
pump manufacturer suggests coupling windage this can be
eliminated as there are several pumps but only two have serious leaks.

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