Product Overview

The Pentair FullFloXF 263080 High-Performance Backwash Valve is designed for compatible Pentair Triton® sand filters and Quad D.E.® filters, providing an efficient way to switch between normal filtration and backwash operation.

Unlike a traditional multiport valve, the FullFloXF is engineered around a full-flow, low-restriction design that minimizes pressure loss through the filtration system. Reduced restriction can improve overall hydraulic efficiency, especially on modern variable-speed pump installations.

Pentair 263080 is supplied with Pentair 2" unions and is configured for applications where the filter inlet is on top, including compatible Triton and Quad D.E. filters.

Key Features

• Genuine Pentair OEM backwash valve
• Manufacturer Part Number: 263080
• FullFloXF® high-performance design
• Designed for compatible Triton sand filters
• Designed for compatible Quad D.E. filters
• Includes Pentair 2" union connections
• Supports high-flow pool filtration systems
• 3" OD / 2-1/2" ID valve ports
• Full unrestricted 2-1/2" internal flow path
• Low pressure-loss design
• Corrosion-resistant PVC valve body
• Large comfort-grip operating handle
• Molded port and handle-position markings
• Removable end caps for easier servicing
• Compatible with 2", 2-1/2" and 3" plumbing configurations when properly adapted
• Excellent companion for variable-speed pool pump systems

Pentair specifically designs the FullFloXF family for very low hydraulic restriction, with a full 2-1/2" flow path and 3" OD / 2-1/2" ID ports.

Specifications

Compatible Pentair Filters

Pentair's valve-to-filter connection guide lists 263080 for several popular Pentair filters, including:

Quad D.E. Filters

• 188592 – Quad D.E. 60
• 188593 – Quad D.E. 80
• 188594 – Quad D.E. 100

Triton Sand Filters

• 140236 – TR40
• 140249 – TR50
• 140212 / 140264 – TR60 configurations
• 140210 – TR100
• 140243 – TR140
• 140335 – TR100 HD
• 140315 – TR100C
• 140316 – TR140C

Important Compatibility Note

Always verify the filter model and inlet orientation before ordering.

Pentair manufactures several FullFloXF backwash-valve configurations that may look similar but have different filter-side plumbing arrangements.

High-Flow FullFloXF Design

A major advantage of the 263080 over many conventional backwash valves is reduced hydraulic restriction.

The valve features:

3" outside-diameter ports
with
2-1/2" inside-diameter connections

and maintains a full unrestricted 2-1/2" flow path through the valve.

This larger internal waterway can be especially beneficial when paired with:

• Variable-speed pumps
• High-flow filtration systems
• Larger residential pools
• Commercial-style equipment pads
• 2-1/2" or 3" plumbing
• Systems where minimizing head loss is important

Lower Hydraulic Resistance

Every valve, fitting and plumbing restriction adds resistance to the circulation system.

Pentair designed FullFloXF specifically to reduce the pressure loss associated with traditional backwash valves. Lower restriction means the pump may require less energy to move a given amount of water through the filtration system.

This makes the valve particularly well suited for modern variable-speed pump installations where maximizing hydraulic efficiency is a priority.

Filter & Backwash Operation

The FullFloXF valve provides the two primary flow paths required for a backwashable filtration system.

FILTER

Normal circulation position.

Water is directed through the filter media and then returned to the swimming pool.

BACKWASH

Reverses the appropriate flow through the filtration system so accumulated dirt and debris can be flushed from the filter and discharged through the waste line.

Always turn the circulation pump OFF before changing valve position.

FullFloXF vs. Traditional Multiport Valve

A conventional multiport valve routes water through numerous internal passages so it can provide several operating modes.

The FullFloXF uses a more streamlined approach focused on filtration and backwashing, allowing Pentair to create a larger and less restrictive internal water path.

This makes the 263080 particularly attractive when:

• Hydraulic efficiency is important
• The pool uses a variable-speed pump
• Larger plumbing is installed
• A six-position multiport valve is unnecessary
• The equipment system is designed around high water flow

Built for Equipment-Pad Service

Pentair incorporates several service-friendly features into the FullFloXF design.

Removable End Caps

The valve can be accessed for servicing without replacing the complete valve body.

Large Operating Handle

The oversized comfort-grip handle makes switching between operating positions straightforward.

Molded Markings

Position and port markings are molded into the valve body to make plumbing identification easier.

PVC Construction

The valve body is manufactured from corrosion-resistant PVC for long-term equipment-pad use.

Ideal Applications

The Pentair 263080 is a strong choice for:

• New Triton sand-filter installations
• Quad D.E. filter installations
• Replacement of an existing FullFloXF valve
• Variable-speed pump upgrades
• High-flow equipment-pad renovations
• 2-1/2" or 3" plumbing upgrades
• Systems where reducing flow restriction is a priority

Frequently Asked Questions

What does Pentair 263080 fit?

It is designed primarily for compatible Pentair Triton sand filters and Quad D.E. filters with the appropriate inlet configuration.

Does 263080 fit a Quad D.E. 60?

Yes. Pentair lists filter 188592 Quad D.E. 60 with FullFloXF valve 263080.

Does it fit Quad D.E. 80 and Quad D.E. 100?

Yes. Pentair also lists:

• 188593 – Quad D.E. 80
• 188594 – Quad D.E. 100

with valve 263080.

Does it fit a Triton TR100?

Yes. Pentair's connection guide lists the 140210 TR100 with 263080.

Does it fit the Triton TR140?

Yes. 140243 TR140 is also listed for this valve configuration.

Does it have 2" connections?

The 263080 is supplied with Pentair 2" unions, while the FullFloXF valve body itself is engineered around larger 3" OD / 2-1/2" ID ports.

Can it be used with 2-1/2" or 3" plumbing?

The FullFloXF platform is designed to accommodate 2", 2-1/2" and 3" plumbing configurations depending on the unions/adapters used.

Is this a six-position multiport valve?

No. The FullFloXF is a high-performance backwash valve, not a traditional six-position multiport valve.

Why choose FullFloXF instead of a standard backwash valve?

Its primary advantage is the larger unrestricted flow path and reduced pressure loss, which can improve overall hydraulic efficiency.

Can the valve be serviced?

Yes. Pentair incorporates removable end caps to simplify internal valve servicing.