Product Overview

Give a compatible Pentair FNS Plus D.E. filter a backwash valve built for efficient water flow. The Pentair FullFloXF 263081 is supplied with Pentair 2-inch filter unions glued on and has its filter inlet port on the bottom to match the FNS Plus connection layout.

The FullFloXF design provides a straight-through flow path with low pressure loss. Its large comfort-grip handle and molded position markings make it straightforward to select filtration or backwash during routine filter service.

Key Features

Made for FNS Plus D.E. filters: Bottom filter-inlet configuration

Pre-attached 2-inch Pentair unions: Designed to connect to compatible filter bulkheads

Low-restriction flow path: FullFloXF valve design helps reduce pressure loss

Large handle: Comfortable grip for changing valve position

Serviceable construction: Removable end caps provide access for maintenance

Flexible plumbing ports: Valve ports have a 2½-inch inside diameter and 3-inch outside diameter

Specifications

Warranty & Compatibility

Check Fitment Before Ordering

Pentair assigns different FullFloXF valve configurations to Quad D.E., sand, Sta-Rite System:3, and other filters. Part 263081 is the bottom-inlet version identified for the FNS Plus models above.

Installation and Service Guidance

Confirm your filter model, inlet position, union connections, and equipment-pad clearance before replacing a valve. A qualified pool professional should install the valve and verify the filter and waste-line connections. Always turn off the pump and relieve system pressure before changing valve position or servicing the filter. Follow the filter’s instructions for backwashing and recharging D.E. media.

Customer-Facing Q&A

Q: Will this fit a Pentair Quad D.E. filter?
A: Pentair specifies a different top-inlet valve configuration for Quad D.E. filters. Check the filter model and valve connection guide before ordering.

Q: Are the filter unions included?
A: Yes. Pentair identifies part 263081 as the version with 2-inch Pentair unions glued on.

Q: Is this the Sta-Rite System:3 version?
A: No. Pentair lists separate FullFloXF configurations with Sta-Rite offset adapters for System:3 filters.