Sealed Motor: The motor is completely sealed in waterproof housing and typically filled with specialized oil or clean water to prevent water ingress and cool the motor.
No Priming Needed: Because the pump sits completely underwater, it never loses its prime, eliminating the need to manually pour water into the system before starting it.
Pushing Mechanism: Instead of sucking water (which is limited by atmospheric pressure to about 32 feet), submersible pumps use centrifugal force from rotating impellers to push water upward over great heights (heads).
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