<p>A heat block (362) for use with a pressure regulator (200) is described. The heat block (362) comprises a body (402) to be at least partially disposed within a heating chamber (204) coupled to a regulator body (202) of the pressure regulator (200), the body (402) including a first plurality of apertures (406a-b), each having an inner surface (408), to receive a first passageway (344) coupled to an inlet (326) and an outlet (328) of the pressure regulator (200). The first passageway (344) is to separate a process fluid from the body (402) and the body (402) is adapted to receive a heat source (364) that is to provide heat to the process fluid via the body (402) as the process fluid flows through the first plurality of apertures (406a-b) via the first passageway (344).</p>
