Check Valve 40mm 1/4lb

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