A seal housing with fluid regulating capability for use with an outlet , the seal housing comprising: a seal element comprising an angled flange that is fittable to the outlet and a seal element body from which the angled flange extends, the seal element body defining a bore extending between opposite open ends of the body and receptive of fluid from the outlet ; a fitting configured to tightly engage with the outlet and to urge the angled flange against the outlet with increasing pressure as fitting-outlet engagement proceeds; and a valve entirely constrained within the bore and configured to regulate a flow of the fluid, which is received from the outlet , through the bore , wherein: the valve comprises a valve body affixed to an interior facing surface of the seal element body and comprising a valve seat , the valve further comprising a piston which is anchored to the valve body and elastically biased toward the valve seat , and an entirety of the valve body and an entirety of the piston are each constrained within the bore; and characterized in that the seal element body comprises: an aft end which is insertible into the outlet ; a forward end ; and a central portion interposed between the aft and forward ends and from which the angled flange extends about the aft end . a seal element comprising an angled flange that is fittable to the outlet and a seal element body from which the angled flange extends, the seal element body defining a bore extending between opposite open ends of the body and receptive of fluid from the outlet ; a fitting configured to tightly engage with the outlet and to urge the angled flange against the outlet with increasing pressure as fitting-outlet engagement proceeds; and a valve entirely constrained within the bore and configured to regulate a flow of the fluid, which is received from the outlet , through the bore , wherein: the valve comprises a valve body affixed to an interior facing surface of the seal element body and comprising a valve seat , the valve further comprising a piston which is anchored to the valve body and elastically biased toward the valve seat , and an entirety of the valve body and an entirety of the piston are each constrained within the bore; and characterized in that the seal element body comprises: an aft end which is insertible into the outlet ; a forward end ; and a central portion interposed between the aft and forward ends and from which the angled flange extends about the aft end . the valve comprises a valve body affixed to an interior facing surface of the seal element body and comprising a valve seat , the valve further comprising a piston which is anchored to the valve body and elastically biased toward the valve seat , and an entirety of the valve body and an entirety of the piston are each constrained within the bore; and characterized in that the seal element body comprises: an aft end which is insertible into the outlet ; a forward end ; and a central portion interposed between the aft and forward ends and from which the angled flange extends about the aft end . an aft end which is insertible into the outlet ; a forward end ; and a central portion interposed between the aft and forward ends and from which the angled flange extends about the aft end . <EOS>