Pentair 270100 2" x 2.5" Black Valve Adapter Kit – Clean And Clear Plus 520 Cartridge Filter

Pentair 2″ × 2.5″ Black Valve Adapter Kit | 270100

OEM Pentair union adapter kit (SKU 270100) to connect 2″ valve plumbing to 2.5″ filter ports for compatible Pentair filters.

Features

• Factory-made adapter to join 2″ valve unions with 2.5″ filter tanks
• Compatible with Pentair Quad D.E., FNS Plus, and Clean & Clear Plus filters
• Includes union nuts, adapter bodies, and replacement O-rings 
• Chemically resistant construction built for pool environments 
• Helps avoid re-plumbing when replacing filters or valves 

Description

The Pentair 270100 Valve Adapter Kit provides a reliable union adapter for systems where your valve is 2″ but your filter tank uses 2.5″ plumbing. Rather than re-pipe the entire setup, this kit gives you the correct hardware to link your Pentair multiport or control valve to your filter tank. It includes union nuts, body adapters, and O-rings — all made to Pentair’s quality standards with durable, chemical-resistant materials to ensure long life in a pool setting.

Pro Tip

Before tightening, apply a thin coat of silicone lubricant to the O-rings to prevent pinching and ensure a leak-free union. Tighten the union nuts gradually and evenly for best results.

Installation Tips

Shut off pump and fully release pressure before working. Remove the existing union parts, clean the mating surfaces, install the new adapter bodies and O-rings, then hand-tighten union nuts. Once reassembled, restore pressure and check for leaks.