Impeller clearance, Direction of rotation, Guarding – Flowserve Durco Mark 3 ISO Frame Mounted User Manual
Page 22: Priming and auxiliary supplies, Direction of rotation (5.4), Guarding (5.5), Lubrication schedule (see 6.2.3), Priming and auxiliary supplies (5.6), Recommended grease lubricants (5.2.3), 3 impeller clearance
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