NO LONGER AVAILABLE USE C-25069-000 AS A REPLACEMENT

Air Check Valve 40 mm with low backpressure 114 gramme (1/4 lb) is designed for air only and to operate as a one way check valve installed in the blower line.
Because of the limitations of sealing means – and low operating forces – this product is principally designed to operate as a surge protection device –
it cannot be relied upon to provide an absolute seal for the lifetime of the Spa Pool.
 
NOTE: DO NOT rely upon a Check Valve to protect against water backflow or water leakage in an air blower installation.
Install a Double Acting Air Lock Loop System