4.3.1 The requirements for connections are the
same as those requirements for the piping system in which they are
installed, as stated in paragraph 2.1.1.5.
4.3.2 Pipes may be assembled using adhesive-bonded,
flanged or mechanically coupled joints.
4.3.3 Adhesives, when for joint assembly should
be suitable for providing a permanent seal between the pipes and fittings
throughout the temperature and pressure range of the intended application.
4.3.4 Tightening of flanged or mechanically coupled
joints should be performed in accordance with the manufacturer's instructions.