| 摘要 |
<p>A ported bushing for use with a pressure switch for monitoring the pressure of pressurized hydrocarbons flowing through a pipeline is provided, the ported bushing having a main body containing a threaded opening for attaching the pressure switch, two threaded test ports for attaching testing equipment thereto and a threaded end for attaching the ported bushing to a valve attached to the pipeline. The ported bushing can include a tubular body, and can be configured to adapt to different diameters of pressure switches and valves. The ported bushing can further include flattened surfaces for use with a wrench to rotate the bushing. The ported bushing can further include a gauge and a test valve coupled to the test ports to enable the testing of the pressure switch in-situ when the valve is closed.</p> |
