A process variable transmitter manifold is provided that includes a valve body having a valve and a flanged mounting face. The valve body has a port therethrough for selectively coupling a process fluid through the valve, and a cooling channel in the valve body. The cooling channel has an inlet, an outlet, and a passage connecting the inlet and the outlet. A method of controlling temperature of a process fluid in a manifold is also provided. The method includes passing fluid through a channel in the manifold, passing the process fluid through at least one bore through the manifold, and adjusting temperature of the process fluid through conductive cooling or heating of the process fluid based on the certain temperature of the fluid passing through the channel.