Zoeller 31-1097 Duplex Sewage Basin 30x36 Inch

Product Description

The ZOELLER 31-1097 is a one-piece, seam-free duplex sewage basin constructed from polyethylene structural foam. It is the basin component of the ZOELLER 31-1105 duplex basin and lid assembly, paired with the 17-0451 fiberglass cover. Measuring 30 inches in diameter and 36 inches in height, this basin is built for below-grade installation in residential and light commercial sewage collection applications. The seam-free construction eliminates leak points that are common in multi-piece basins. Licensed plumbers and pump service technicians are the primary installers of this unit.

This basin is designed for duplex sewage pump systems where redundant pump operation is required. The 30-inch diameter provides sufficient sump volume for two sewage pump installations. It ships as the basin-only component within the 31-1105 assembly and is used in applications requiring a solid cover configuration. The built-in inlet, vent, and discharge provisions accommodate standard plumbing rough-in without field fabrication.

Key Features

• One-piece, seam-free polyethylene structural foam construction eliminates leak-prone joints
• 30-inch diameter by 36-inch depth accommodates duplex pump configurations
• 2-inch discharge outlet for standard sewage pump connection
• 2-inch vent flange supports code-required basin venting
• 4-inch combination inlet hub for flexible influent piping connections
• Includes gasket and hardware; inspection plate provided for service access

Compatibility

The 31-1097 basin is the basin component of the ZOELLER 31-1105 30-inch by 36-inch duplex basin and lid assembly. It is paired with the ZOELLER 17-0451 fiberglass solid duplex cover. This basin is listed under UL applicable standards for sewage pump basin and cover assemblies.

Installation Notes

Installation should be performed by a licensed plumber in accordance with local plumbing codes and the International Plumbing Code (IPC). Shut off all associated electrical circuits and isolate influent flow before setting or servicing the basin. Ensure the basin is set level and fully supported by compacted backfill or concrete to prevent shifting under load. Do not over-torque inlet, vent, or discharge fittings beyond hand-tight plus standard wrench turns specified by the fitting manufacturer.

Technical Specifications

• Basin Material: Polyethylene structural foam
• Cover Material: Fiberglass (17-0451, sold as part of 31-1105 assembly)
• Cover Type: Solid duplex
• Diameter: 30 inches
• Height: 36 inches
• Discharge Size: 2 inches
• Vent Flange Size: 2 inches
• Inlet Hub Size: 4 inches (combination)
• Construction Type: One-piece, seam-free
• Application: Sewage pump basin
• UPC: 05351411198

Standard Information

• Brand: ZOELLER
• Manufacturer Part Number: 31-1097