8 EB 3009 ENInstallation4 InstallationSee Fig. 1 on page 7.Choose a place of installation that allows youto freely access the regulator even after theentire plant has been completed.Î Install the regulator free of stress. If nec-essary, support the pipeline near to theconnecting flanges. Do not attach sup-ports directly to the valve or actuator.Î Install a strainer (e.g. SAMSONType 2 N/2 NI) upstream of the regula-tor to prevent any sealing parts, weldspatter and other impurities carriedalong by the process medium impairingthe proper functioning of the valve,above all the tight shut-off.4.1 Mounting positionThe regulators are supplied ready for con-nection.Î Install the regulator in a horizontal pipe-line.1 Strainer2 Type 42-10 RS CheckValve (backflowprotection)3 Pressure gauge4 Shut-off valvep1 Upstream pressurep2 Downstream pressureFig. 2: Sample application__++1 2 434p1 p23Î The flow of direction must correspondwith the direction indicated by the arrowon the valve body.Î DN 15 to 150/NPS ½ to 6: actuatorfacing downward (see Fig. 1 andFig. 4).DN 200 to 250/NPS 8 to 10: actuatorfacing upward (see Fig. 4).Possible malfunction and damage due to ad-verse weather conditions (temperature, hu-midity).Protect the regulator against frost if it is usedto control freezing media. Heat the regulator.4.2 Compensation chamber forsteamThe mounting position of the compensationchamber is indicated by an adhesive labelon the chamber itself as well as by an arrowand the word "top" stamped on the top ofthe chamber.NOTICE!