Polyethylene (Poly) Septic Tank Accessories

General Information:

  • Septic Tank Lids / Riser Covers
  • Tank Risers / Manhole Extensions
  • Effluent Filters
  • Riser Adapter Rings
  • Distribution Boxes
  • Diverter Valves

Septic Tank Lids / Riser Covers


Poly septic tank Lids are designed to fit Snyder spherical, ribbed and dominator and D2 low profile septic tanks. They are made from heavy duty polyethylene plastic.

Polypropylene Septic Tank Lids (click Part Number to Email for more info)
Part Number Lid Manufacturer Lid Diameter Gasket Lid Price
LNW63672 Snyder 20" YES $39.50
LSISEPLID Snyder 24" YES $47.50
LTPLID24 Trailer Products 24" NO $60.00
LTF24RISL TUF-TITE 24" YES $23.00
LTF24RISLFLAT TUF-TITE 24" Heavy Duty YES $40.00
LTF20RISL TUF-TITE 20" YES $20.00

Tank Risers / Manhole Extensions


Manhole extensions (risers) - These risers are 24" in diameter and come in 6", 15", 18" and 24" heights. They are designed to turn and lock into the tank manway. They can be stacked and locked together to achieve the required height.. The original septic tank lid locks onto the riser opening.

Septic Tank Risers / Manhole Extensions (click Part Number to Email for more info)
Part Number Manufacturer Diameter / Height Equipped with Lid Riser Price
LSI63832 Snyder D2 20" D / 6" H NO $69.00
LSI63833 Snyder D2 20" D / 15" H NO $80.50
LSI63834 Snyder D2 20" D / 24" H NO $92.00
LSI63831 Snyder D2 12" D / 23" H 20" LID $102.50
LSI63672 Snyder D2 20" GASKET (for riser) NO $10.00
LSI63839 Snyder D2 20" GASKET (for Lid) NO $13.50
LSIRIS12 Snyder 24" D / 12" H NO $84.50
LSILIDRISER Snyder Lid/Riser Combo 12" D / 30" H 24" LID $109.00
LTPRIS24 TP - Fiberglass Riser 24" D / 24" H NO $93.00
LTF24RIS TUF-TITE 24" D / 6" H NO $25.00
LTF24X12RIS TUF-TITE 24" D / 12" H NO $41.00
LTF20RIS TUF-TITE 20" D / 6" H NO $20.00
LTF20X12RIS TUF-TITE 24" D / 12" H NO $37.00

TUF-TITE Effluent filters


Effluent filters - Loomis Tanks offers the EF-4 residential filter. The filter has an 800 gallon per day capacity.

TUF-TITE Effluent filter (click Part Number to Email for more info)
Part Number Filter Type Filter Size Color Filter Price
LTFEF4 Effluent filters 4" Yellow $25.00

Riser Adapter Rings


Riser Adapter Rings - These rings are secured to the septic tank manway. Manhole extensions are then snapped onto the rings and can be stacked vertically to achieve the height required for the specific application. They are available in 20" diameter for fiberglass, 24" diameter for poly tanks and a special 20"/24" adapter that fits concrete septic tanks.

Riser Adapter Rings (click Part Number to Email for more info)
Part Number Manufacturer Adapter Diameter Adapter Ring Price
LTF24RTT TUF-TITE 24" (riser to tank) $14.00
LTF20RTT TUF-TITE 20" (riser to tank) $13.00

TUF-TITE Distribution Boxes

Manhole extensions (risers) - These risers are 24" in diameter and come in 6", 12" and 18" heights. They are designed to turn and lock into the tank manway. They can be stacked and locked together to achieve the required height.. The original septic tank lid locks onto the riser opening.


TUF-TITE Distribution Boxes (click Part Number to Email for more info)
Part Number Manufacturer # of Holes D-Box Price
LTF4HD2 TUF-TITE 4 Hole $45.00
LTF6HD2 TUF-TITE 6 Hole $40.00

Diverter Valve


Loomis offers the 4" PVC model. This diverter valve is the simplest, strongest and most economical valve ever intended for septic tank leach fields.

Diverter Valve (click Part Number to Email for more info)
Part Number Manufacturer Diameter/Height # of Holes Diverter Price
LMSDIVERTERVAL NDS 6.3" D / 30.5" H 4 Hole $121.00