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Unique sliding-vane pump design self-adjusts for wear to maintain flow rates.

Excellent self-priming and dry run capabilities.

Blackmer mechanical seal and ball bearing construction provide maximum reliability

Symmetrical bearing support assures even loading and wear for long life.

Adjustable relief valve protects pump against excessive pressures.

External ball bearings are isolated from pumpage by mechanical seals to maximize bearing life and minimize contamination risk.