For closed heating and cooling water systems with threaded connections, from 35 liters standing, diaphragm according to DIN EN 13831, permissible operating temperature 70 °C, for antifreeze additive up to 50%. Approval according to the Directive on pressure equipment 97/23/EC, inlet pressure 1.5 bar. Other technical features include: pressure stage flange other, ultimate pressure 6.00, capacity 600.00 liters, no replaceable diaphragm, with feet, nominal diameter expansion connection 1 inch (25), placement horizontal no, placement vertical yes, pipe outer diameter expansion connection 33.70 mm, maximum medium temperature (continuous operation) 70.00.