PVC Lamella Tube Settler Media for Wastewater Treatment Our PVC Lamella Tube Settler Media (Model BLT-50) is a high-performance inclined plate sedimentation filler designed for new construction and retrofit of clarifiers in wastewater treatment plants. Manufactured from rigid PVC with precise 50mm tube spacing and a 60° inclination angle, this media dramatically increases the effective settling area while reducing plant footprint by up to 80%. Widely adopted across Brazil,