Closure device definition
Closure device means a cap, hatch, lid, plug, seal, valve, or other type of fitting that blocks an opening in a cover such that when the device is secured in the closed position it prevents or reduces air pollutant emissions to the atmosphere. Closure devices include devices that are detachable from the cover (e.g., a sampling port cap), manually operated (e.g., a hinged access lid or hatch), or automatically operated (e.g., a spring-loaded pressure relief valve).
Closure device means a cap, hatch, lid, plug, seal, valve, or other type of fitting that blocks an opening in a cover such that if the device is secured in the closed position it prevents or reduces air pollutant emissions to the atmosphere. Closure devices include devices that are detachable from the cover, for example, a sampling port cap, manually operated, for example a hinged access lid or hatch, or automatically operated, for example, a spring-loaded pressure relief valve.
Closure device means a cap, hatch, lid, plug, seal, valve or other type of fitting that blocks an opening in a cover such that when the device is secured in the closed position it prevents or reduces air pollutant emissions to the atmosphere. Closure devices include devices that are detachable from the cover, includ- ing a sampling port cap; manually operated devices, including a hinged access lid or hatch, and devices that are automatically operated, including a spring−loaded pressure relief valve.