A pneumatic valve (10; 36) comprising: a body; an inlet (14; 48) disposed in a first end of the body; an outlet (16; 50) disposed in a second end of the body; a first electrically resistive heating element (28; 52) disposed within the inlet (14; 48), wherein the first electrically resistive heating element (28; 52) heats a first fluid source passing through the inlet (14; 48) to a temperature above 0 degrees C; and a second electrically resistive heating element (30; 54) disposed within the outlet (16; 50), wherein the second electrically resistive heating (30; 54) element heats a second fluid source passing through the outlet (16; 50) to a temperature above 0 degrees C; characterised in that: the body further comprises: a poppet chamber, the poppet chamber including interior walls; a poppet positioned inside of the poppet chamber, the poppet enabling regulation of fluid communication between the inlet and the outlet; and a plurality of seals (42, 60) disposed in the poppet and positioned to enable contact with the interior walls of the poppet chamber at a series of connection points; wherein the body further includes a third, ring-shaped electrically resistive heating element disposed in the interior walls of the poppet chamber and positioned adjacent to at least one of the series of connections points such that one of the plurality of seals contacts the ring-shaped heating element when the poppet is in a closed position. a body; an inlet (14; 48) disposed in a first end of the body; an outlet (16; 50) disposed in a second end of the body; a first electrically resistive heating element (28; 52) disposed within the inlet (14; 48), wherein the first electrically resistive heating element (28; 52) heats a first fluid source passing through the inlet (14; 48) to a temperature above 0 degrees C; and a second electrically resistive heating element (30; 54) disposed within the outlet (16; 50), wherein the second electrically resistive heating (30; 54) element heats a second fluid source passing through the outlet (16; 50) to a temperature above 0 degrees C; characterised in that: the body further comprises: a poppet chamber, the poppet chamber including interior walls; a poppet positioned inside of the poppet chamber, the poppet enabling regulation of fluid communication between the inlet and the outlet; and a plurality of seals (42, 60) disposed in the poppet and positioned to enable contact with the interior walls of the poppet chamber at a series of connection points; wherein the body further includes a third, ring-shaped electrically resistive heating element disposed in the interior walls of the poppet chamber and positioned adjacent to at least one of the series of connections points such that one of the plurality of seals contacts the ring-shaped heating element when the poppet is in a closed position. a poppet chamber, the poppet chamber including interior walls; a poppet positioned inside of the poppet chamber, the poppet enabling regulation of fluid communication between the inlet and the outlet; and a plurality of seals (42, 60) disposed in the poppet and positioned to enable contact with the interior walls of the poppet chamber at a series of connection points; wherein the body further includes a third, ring-shaped electrically resistive heating element disposed in the interior walls of the poppet chamber and positioned adjacent to at least one of the series of connections points such that one of the plurality of seals contacts the ring-shaped heating element when the poppet is in a closed position.