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Polylok PL-625 Effluent Filter | 1/32" Filtration | Grease Trap Effluent Filter | Wastewater Effluent Filter

The PL-625 filter is ideal for grease trap applications. The 1/32” filtration has been shown to reduce fats, oils, and grease (FOG) by as much as 60% to 98%! The filter may be used in onsite wastewater systems that require a finer level of TSS removal. Whatever the application, Polylok has the filter for you!

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PL-625 Installation:

Ideal for residential and commercial waste flows up to 10,000 gallons per day (GPD).

  1. Locate the outlet of the septic tank.
  2. Remove the tank cover and pump tank if necessary.
  3. Glue the filter housing to the 4” or 6” outlet pipe. If the filter is not centered under the access opening use a Polylok Extend & Lok or piece of pipe to center filter.
  4. Insert the PL-625 filter into its housing.
  5. Replace and secure the septic tank cover.

PL-625 Maintenance:
The PL-625 Effluent Filters will operate efficiently for several years under normal conditions before requiring cleaning. It is recommended that the filter be cleaned every time the tank is pumped, or at least every three years. If the installed filter contains an optional alarm, the owner will be notified by an alarm when the filter needs servicing. Servicing should be done by a certified septic tank pumper or installer.

  1. Locate the outlet of the septic tank.
  2. Remove tank cover and pump tank if necessary.
  3. Do not use plumbing when filter is removed.
  4. Pull PL-625 cartridge out of the housing.
  5. Hose off filter over the septic tank. Make sure all solids fall back into septic tank.
  6. Insert the filter cartridge back into the housing making sure the filter is properly aligned and completely inserted.
  7. Replace and secure septic tank cover.


  • Rated for 10,000 GPD (gallons per day).
  • 625 linear feet of 1/32” filtration.
  • Accepts 4’’ and 6’’ SCHD 40 pipe.
  • Built in gas deflector.
  • Automatic shut-off ball when filter is removed.
  • Alarm accessibility.
  • Accepts PVC extension handle.

Technical Specs