ZipDrip Valve. Plug in this valve into your pump AC/DC adapter and you’ll transform your existing System into a totally drip less one. Comes with Y-connector. ZipDrip connects between the reservoir and the pump. Select what tubing size you have between the reservoir and the pump. Starter and Ultimate system are based on 1/4″ and Advanced system uses a 3/8″ feed to the pump.