The GARDENA Master Unit 1000 is the starter component of the GARDENA Micro-Drip-System. The Master Unit reduces initial pressure to an operating pressure of approx. 1.5 bar for optimal operation of the connected Drip Heads and Nozzles. The water flow is approx. 1，000 litres per hour. The Master Unit also filters the water. The Master Unit is equipped ready-to-connect. Thanks to the patented "Quick & Easy" connection technology， installation of the Master Unit is especially easy. Flexible-Thanks to the fitting and an adaptor， the connector can be flexibly used for both the 4.6 mm (3/16") Supply Pipe and the 13 mm (1/2") Connecting Pipe. After-sales service provided.