Swimables 3/4" Stainless Air Vent for FNS Plus pentair check valve flapper The Valpak V38-140 FNS Plus

The Valpak V38-140 FNS Plus Top Manifold is a heavy-duty replacement designed to restore proper water distribution

including Title 20 and Title 24 requirements where applicable

Proper installation helps ensure safe startup and long-term filter reliability

and outdoor conditions

Swimables 3/4" Stainless Air Vent for FNS Plus pentair check valve flapper The Valpak V38-140 FNS PlusKey Fit and Function Releases Trapped Air from Filter Tank Designed to safely vent trapped air during startup, preventing pressure buildup and ensuring proper filter operation Compatible with FNS Plus & Nautilus Filters Fits Pentair FNS Plus and Nautilus style pool filters that use a 3 4" air vent connection 3 4" Threaded Replacement Fit Matches original thread sizing for straightforward replacement without plumbing modifications Stainless Steel