Product Overview

The Pentair 357263 6" Flange Assembly Kit is a genuine OEM commercial pump connection kit designed for select Pentair commercial pool and spa pumps. This Schedule 80 flange assembly includes the flange, gasket, and stainless steel hardware needed to create a secure, serviceable pump plumbing connection.

This kit is commonly used on Pentair EQ Series, C-Series, Aurora, CSP, CCSP, 5CSP, and 5CCSP commercial pump applications where a 6" flange connection is required.

Ideal For

Commercial pump installation, replacement, or repair where a 6" Schedule 80 flange connection is needed for compatible Pentair commercial pool and spa pumps.

Key Features

Genuine Pentair OEM replacement part

6" Schedule 80 flange assembly

Includes gasket

Includes stainless steel hardware

Designed for select Pentair commercial pumps

Compatible with EQ Series commercial plastic pumps

Compatible with C-Series commercial bronze pumps

Compatible with Aurora 340/410 Series pumps

Compatible with CSP, CCSP, 5CSP, and 5CCSP commercial pump series

Helps create a secure, leak-resistant commercial pump connection

Built for high-flow commercial pool and spa equipment applications

Benefits

The Pentair 357263 flange kit provides the correct 6" commercial connection components needed for compatible Pentair pump installations. Replacing worn, corroded, cracked, or missing flange components helps reduce leaks, maintain proper flow, and keep the pump connection serviceable.

Because this is an OEM Pentair kit, it is designed to match the intended commercial pump connection and hardware requirements.

Specifications

What’s Included

• 6" Schedule 80 flange assembly
• Gasket
• Stainless steel hardware

Some references list the hardware package as including 8 stainless steel bolts, 16 stainless steel washers, and 8 stainless steel nuts. Confirm current packaging before publishing if you want to list the exact hardware count.

Warranty & Compatibility

Compatibility

Designed for select Pentair commercial pool and spa pumps, including:

• Pentair EQ Series commercial plastic pumps
• Pentair C-Series commercial bronze pumps
• Pentair Aurora 340 Series pumps
• Pentair Aurora 410 Series pumps
• Pentair CSP Series commercial pumps
• Pentair CCSP Series commercial pumps
• Pentair 5CSP Series commercial pumps
• Pentair 5CCSP Series commercial pumps

Always confirm pump model, flange size, plumbing layout, port configuration, and parts diagram before ordering.

Confirm Before Ordering

• Pump model number
• Pump series
• Flange size: 6"
• Schedule 80 requirement
• Plumbing connection style
• Existing flange condition
• Gasket requirements
• Hardware requirements
• Whether one or multiple flange kits are needed for the installation

Customer-Facing Q&A

Q: What is Pentair part 357263?
A: Pentair 357263 is a 6" Schedule 80 flange assembly kit with gasket and stainless steel hardware for select Pentair commercial pool and spa pumps.

Q: Does this kit include the gasket?
A: Yes. The gasket is included.

Q: Does this include hardware?
A: Yes. Stainless steel hardware is included.

Q: What pump series does this fit?
A: It is commonly listed for Pentair EQ Series, C-Series, Aurora 340/410, CSP, CCSP, 5CSP, and 5CCSP commercial pumps.

Q: Is this for residential pumps?
A: No. This kit is primarily for compatible Pentair commercial pump applications.

Q: Is this an OEM Pentair part?
A: Yes. 357263 is a genuine Pentair OEM replacement flange assembly kit.

Q: Do I need one or two flange kits?
A: That depends on the pump and plumbing layout. Confirm how many flange connections are being replaced before ordering.