The US corporation said revenue for 2013 dipped 2.4% from $4.83 billion (£2.91bn) to $4.72bn but improved margins saw net income rise from $183.2m to $212.6m.
SPX highlighted an improved fourth quarter performance in its flow technology arm, of which ClydeUnion is a major part.
Revenue between October and December declined 1.1% from $728.2m to $720m but segment income increased from $90.8m to $103.2m. That was attributed to "growth in higher margin aftermarket and component sales and also to reduced costs as a result of restructuring actions completed earlier in the year".
Chris Kearney, chairman of SPX, said he was targeting group revenue growth of between 2% and 6% this year and improvements in margins across all areas, in spite of remaining "cautious" over prospects in the global economy.