ISO 8536-12:2021 pdf download – Infusion equipment for medical use — Part 12: Check valves for single use. 6.5 Flow rate When the check valve is connected to the infusion equipment, the flow rate shall not be less than 6 l/h when tested in accordance with Clause A.4 . 6.6 Blocking performance The check valve shall close at a pressure of not more than 2 kPa in its counterflow direction when tested in accordance with Clause A.5. 6.7 Opening pressure The check valve shall open at a pressure of not more than 2 kPa when tested in accordance with A.6.1...