Pentair
Drain Plug Seal Leak
Pump runs but water leaks from the drain plugs at the bottom of the Pentair pump housing.
Advertisements
Possible Causes
Loose drain plugs, Missing or damaged drain plug O‑rings, Cross‑threaded plugs, Freeze damage to threads
How to Fix / Troubleshooting
Safety first: Turn off pump and relieve pressure before removing drain plugs.
- Step 1 – Tighten plugs: Hand‑tighten the drain plugs. Do not overtighten, as this can crack the housing.
- Step 2 – Inspect O‑rings: Remove the plugs and inspect the small O‑rings. Replace any that are cracked, flattened, or missing.
- Step 3 – Use thread sealant if needed: Apply a small amount of Teflon tape or thread sealant compatible with plastics if threads are slightly worn (avoid overuse).
- Step 4 – Replace housing if cracked: If the pump housing threads are cracked from freeze damage, the entire housing may need replacement.
Advertisements
Repair Difficulty
Easy
2/5
Required Part
Pump Drain Plug O-Rings
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements