Maximum Operating Pressure 5.4 bar (540 kPa, 80 psi) at ambient temperature Typical Water Flow Rate mL/min at 2.1 bar (210 kPa, 30 psi) PN 4905: 130 PN 4906: 78 PN 4907: 130 PN 4908: 77 Recommended Integrity Test Minimum Bubble Point - Water PN 4905: 3.5 bar (350 kPa, 51 psi) PN 4906, 4908, and 4907: 3.2 bar (320 kPa, 46 psi)