The Vac-Alert Model VA-2000L is a Safety Vacuum Release System tailored for suction lift scenarios, where the pump's suction is above the pool water's surface. Featuring a 0.170-inch orifice, it mitigates nuisance tripping from high vacuum surges during pump start-up. The unit integrates a 3.5-pound spring check valve assembly, maintaining water flow even when in a vented state, and safeguards the pump against dry-running damage with suction capacity up to 3.5 feet.

Its one-way vented poppet ensures the surge chamber recharges when the pump is off, enhancing reliability and safety.