Leaking Pump Flanges
Long-term neglect of the pump case and/or motor cover studs of a BWCP can cause them to corrode and seize. New pump case studs have a zinc phosphate coating to improve corrosion resistance and paint adhesion with a high temperature antifriction coating. If the pump case or motor case gasket leaked or the plant is subjected to flooding, the studs can corrode and bind in place. Often the only way to remove the studs to allow servicing of the BWCP is to cut them out.