Common use of Endurance test Clause in Contracts

Endurance test. 9.1. A filling unit or service valve shall be capable of conforming to the applicable leakage test requirements of paragraphs 5. and 8. above, after being subjected to a number of cycles of opening and closing as mentioned in the annexes to this Regulation. 9.2. A shut-off valve is to be tested with the valve outlet plugged. The valve body filled with n-hexane, and the valve inlet subjected to a pressure of 3,000 kPa or of WP in accordance with the classification pressure of the valve. 9.3. An endurance test is to be conducted at a rate not faster than 10 times per minute. For a shut-off valve, the closing torque is to be consistent with the size of handwheel, wrench, or other means employed to operate the valve. 9.4. The appropriate tests for external and seat leakage, as described under external leakage test under paragraph 5. above and seat leakage test under paragraph 8. are to be conducted immediately following the endurance test. 9.5. Endurance for 80 per cent stop valve