For use with manifolds having #15 O-ring joints on banks (e.g. M150004). From left to right: first and third valves are S540012 as the shut off. Second valve is S540004 having 9mm O.D. tubing. Fourth valve is S540008. The pre-trap uses...

With joints for easy removal of condensate. Center tube hose connection is always 10mm for easy connection to manifold bank tubes which are also with 10mm hose connection.