Pentair SuperFlo Leaking Drain Plug O-Rings

Pump leaks from the drain plug(s) at the bottom of the pump housing.

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Possible Causes

Loose drain plugs, Missing or damaged O-rings, Cross-threaded plugs, Cracked pump housing at plug port

How to Fix / Troubleshooting

Safety first: Turn off power and close valves before working on drain plugs.

  • 1. Tighten plugs: Gently tighten the drain plugs by hand or with a suitable tool. Do not overtighten, as this can crack the housing.
  • 2. Inspect O-rings: Remove the plugs and check the O-rings for cracks, flattening, or missing sections. Replace with correct-size O-rings if damaged.
  • 3. Check threads and housing: Inspect the threads on the plug and in the housing. If the housing is cracked, the pump housing may need replacement.
  • 4. Reinstall and test: Reinstall plugs with new O-rings, fill the pump with water, and run the pump while observing for leaks.
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Repair Difficulty

Very Easy 1/5

Required Part

SuperFlo Drain Plug O-Rings
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