Pentair 263080 – FullFloXF High-Performance Backwash Valve

Product Overview

The Pentair 263080 is a high-performance 6-position backwash valve designed for side-mounted sand and D.E. filters. With the inlet on top and full-flow 2-½″ interior diameter ports, it minimises pressure loss and supports efficient filtration system operation.

Key Features

• Top-mounted inlet for flexible plumbing configurations.
• Corrosion-resistant PVC body built for durability in pool environments.
• 6 positions: Filter, Backwash, Rinse, Waste, Recirculate, Closed.
• Large comfort-grip handle with positive lock in each position for ease of use.
• Removable end caps allow easy servicing of internal components without disconnecting union connections.

Technical Specifications

• Part Number: 263080
• Connection: 2″, 2½″ or 3″ unions depending model variant.
• Interior Port Size: 2½″ for low-pressure restriction flow.
• Valve Positions: Six functional settings including Winterizing position.
• Body Material: Premium quality corrosion-resistant PVC.

Applications & Compatibility

This backwash valve is suitable for use with Pentair side-mounted sand filters such as the Triton series and Quad D.E. filters. It is ideal when upgrading from older valves or replacing a leaking or malfunctioning 6-position valve. Verify that your filter body uses a side-mounted valve with top-inlet configuration prior to ordering.

Installation Instructions

• Shut off the pool pump and relieve pressure in the system before servicing.
• Remove the old multiport valve, noting plumbing and electrical connections if applicable.
• Install the 263080 valve making sure the inlet ports align with the filter connection and union fittings are tight.
• Confirm the handle is in the “Filter” position before restoring flow.
• Restore circulation and observe device for leaks and correct functionality through each valve setting.

Troubleshooting

• Valve leaks at winterizing position: Inspect O-rings in end caps and ensure proper seal when handle is locked in the winterizing position.
• Loss of flow when set to Filter: Ensure unions are not cross-threaded and that the handle fully engages the seating detent.
• Hard to turn handle: Confirm pressure is relieved, check for debris in the valve body, and verify lubrication on the O-ring seal surfaces.

Maintenance Tip

Annually inspect all O-ring seals and end cap screws. Replace worn seals and tighten end cap bolts evenly. Keeping the valve in proper condition helps maintain low system pressure and increases overall filter efficiency.