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Closures

Closures are basically a "door" for gaining access to a launcher, receiver or main pipeline.  They are used in lieu of a flange and blind-flange arrangement, which is very cumbersome when having to loosen 36 nuts and bolts every time a pig is introduced into pipe.  The two basic types are threaded which is like a threaded jar cap, and quick-opening which is equipped with two interlocking cams.  When quoting, we need to know which type is wanted, pressure rating, wall thickness of pipe, and anything else that customer may feel pertinent.