Safety Vacuum Release Systems or SVRS are recommended for residential and commercial pools and spas. Having one installed prevents against pool and spa drain entrapment as it will automatically shut off the main circulation pump if there is a sudden change in the water pressure. It does this by introducing air into the system, stopping the pull of water. An example of a change in pressure would be a bather or swimmer getting stuck to the main drain or suction port. There are two main methods of SVRS or Safety Vacuum Release Systems: mechanical and electronic. The mechanical SVRS introduces air into the system stopping the pull of water. The electronic SVRS shuts off the pump stopping the pull of water.
Here at PoolSupplyWorld, we offer all the most reliable and popular manufacturers and brands such as Vac-Alert, Hayward and many more!