Pentair | 197130 | SMBW 4000 Filter Tank Bottom Assembly | D.E. Filter

The Pentair 197130 tank bottom assembly is a replacement lower housing component designed for Pentair SMBW 4000 series D.E. pool and spa filter systems. This assembly forms the base of the filter tank and supports the internal filtration components while maintaining the sealed chamber required for pressurized filtration. Its durable molded construction provides structural strength and reliable operation in demanding pool filtration environments.

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Key Features

• Replacement tank bottom assembly designed for Pentair SMBW 4000 series D.E. filter systems.
• Forms the lower portion of the filter housing and supports internal filtration components.
• Maintains the sealed chamber required for pressurized filtration system operation.
• Durable molded construction resists pool chemicals, filtration pressure, and outdoor equipment conditions.
• Precision-engineered design ensures proper alignment with the tank lid and clamp assembly.
• Ideal replacement component when original tank bases become cracked, damaged, or worn.

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Product Overview

The Pentair 197130 SMBW 4000 tank bottom assembly serves as the structural base of the SMBW 4000 D.E. filtration system. Installed as the lower section of the filter housing, it supports the internal grid assembly and plumbing components that allow water to circulate through the filtration chamber.

The tank bottom works together with the filter lid, sealing O-ring, and clamp assembly to create the pressurized filtration environment required for effective debris removal. Built from durable materials designed for pool equipment environments, the assembly withstands continuous pressure cycles and chemical exposure. Replacing a damaged tank bottom helps restore structural integrity and ensures reliable filtration performance for Pentair SMBW 4000 pool filter systems.