Pentair Rebuild Kit | FullFlo XF Backwash Valve | 270514Z C9485 The Unicel PG-1903 is a

The Unicel PG-1903 is a single partial replacement DE filter grid for vertical grid DE filter systems with 36 square feet of total filtration capacity

The Unicel C-4305 is a 4000 Series 50 sq

they must be sourced separately

maintaining the watertight closure necessary for the pump to hold prime and sustain consistent flow

Fill tub with hot water 1" above the jets

Pentair Rebuild Kit | FullFlo XF Backwash Valve | 270514Z C9485 The Unicel PG-1903 is aThe Pentair Rebuild Kit (270514Z) is the OEM rebuild kit for the FullFlo XF Backwash Valve, restoring worn internal sealing and diverting components to factory condition in a single service. IMPORTANT: THIS IS A KIT NOT AN INDIVIDUAL PART This listing is for the complete 270514Z Rebuild Kit, which includes seven components (detailed below in the specifications). Confirm you need the full kit before ordering individual components are available