Terminal Units (Sapphire) with probes/ADAptors of 02, N20, Vacuum Gas outlet Points (sapphire type) will accept, retain and release the probe/adaptor by means of quick release mechanism designed for single handed operation. The unit shall have a check valve, which is self-sealing when front fascia of the outlet is removed. The Terminal unit and probe connection shall be non-swivel type. A secondary lock arrangement is also available to keep the outlet in parking position. The outlets are completely non-interchangeable at any level of assembly. This outlet point has only two neoprene.