Introduced in 2024, this semi-automatic unblockable injector system allows a Pool Operator to prevent a chlorine line blockage before it occurs! Once a week, or as often as necessary, the pool operator will simply change 2 valve settings, and the acid and chlorine injectors automatically swap so the acid can keep the chlorine injector free of any blockage! The 3-position valve never allows for direct mixing of any chemical supplies, so this product is completely safe for all users! The included chemical flow indicators provide clear indication if chemical is moving through the system. All supplies are NSF-certified. Patent Pending.