Flow Control Device For E61 Groupheads

The flow control device allows the user to vary the amount of water flowing through the group head with a special needle valve that goes up or down. allowing the user to profile the extractions. Variable flow control allows for lengthy pre-infusion for more even saturation and extraction of your espresso. A group head pressure gauge can be added to allow the user to measure the pressure going through the group head during the brewing process. The flow control device is compatible with most Profitec, ECM, Rocket, Lelit, Bezzera and other machines using an E61 group head.