Individual functions Liner 3000 with Communicator TIC 2.1 Input pressure balance, system screw and pressure relief valve Key to diagram: 634 System screw 706 Pressure relief valve 180 +10 bar 763 Input pressure balance P Pump T Tank Note: The pressure relief valve (706) is built in only up to serial no. 15. 2-2 Lin-h-Kap2 12/03