Vacless SVRS30 Vacuum Release, Vacless SVRS, Non-Adj, Electric, Ctr ThdVacless Electrical Breathers provide immediate vacuum relief upon entrapment by allowing atmospheric air to rapidly fill the pump pot while simultaneously turning off the pump. Electrical units include a three minute time delay restart and audible alert. Please Note: This is a special order part and cannot be returned unless there is a verified manufacturer’s warranty condition. Ensure that this is the correct part before ordering! If you have questions please call before placing your order.