The actuator was situated on the assembly directly over the pipe, which was not insulated. No failures occurred during the six-month duration of this experiment. The actuators were checked for functionality and running time. All of the actuators maintained the required torque to turn the valves on which they were mounted. The rated running time for an LR24 actuator is 80 to 110 seconds, all of the actuators had running times between 82 and 96 seconds after the six months of testing.
Similar tests are on-going.
Determine how much pressure the valve can close off against after life cycling. A total of 16 valves with EDPM O-Rings were tested, Four different sizes are included in the 16 valves tested. The tests were performed inside of an environmental chamber. The valves completed 15,000 full cycles each day. The valves that showed no leakage after life testing were further tested to determine their close-off capabilities.