Processing, December 2020
DECEMBER 2020 www processingmagazine com 17 SAS P SEPCO The SAS P is designed specifically for horizontal and vertical centrifugal pumps in nonhazardous services It is a complete system that incorporates two shaft supporting bushings and a lantern ring It is a noncontact tandem seal that uses air to seal and water to flush clean the stuffing box seal chamber The SAS P is ideal for the pulp and paper food and beverage municipal water wastewater mining and chemical industries The seal is impervious to traditional system conditions that are considered pump seal killers such as Pipe strain Misalignment Off BEP operation Cavitation The SAS Ps split design allows the system to be installed without any equipment removal or breakdown It contains no internal springs which are often sources of failure in mechanical seals The system can withstand 025 inches of radial movement and unlimited axial movement Mechanical seals can only handle 0003 to 0005 inches of movement before spring failure The system only has four major components to install so installation is simplified The SAS P has already solved problems in the field and is a game changer Process fluid with high solids content makes sealing with traditional packing or mechanical seals a challenge that may result in leakage damaged seals fretted shafts and further pump and bearing damage The SAS P prevents these problems and provides a leak free solution
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