History » The 1980s

1980
	Balcke builds the first combined wet/dry cooling tower.
	The Sigma Series 120 is introduced on Oct. 24.
1981
The first natural draft wet cooling tower with integrated flue gas desulphurization plant is built in Germany.
Marley introduces the Class 800, a new hyperbolic natural draft tower.
1982
Marley returns to the industrial counterflow cooling tower market with the introduction of the Class 400. The Permatower II is released.
1983
Marley introduces the Compac II, which gives Marley a small counterflow tower to bid.
1984
	The first complete indirect dry cooling system is built in South Africa, the largest in the world.
1985
	The first discharge of flue gas through a cooling tower is built by Balcke in Germany.

Marley inaugurates a five-year warranty on all of the fan drive equipment (except motor) for Series 200 NC towers, Compac II, Permatower II, Series 10, Series 15, Series 100/120 Sigma and MS towers. The warranty becomes a standard specification item.
1986
Marley sells Marfab and ends its involvement in the sensible heat exchanger manufacturing market. Marley Cooling Tower Company purchases Recold, Inc.
1987
	Marley introduces the QuadraFlow.
1988
The Hamon Dry Cooling Single Row Tube concept is finalized and introduced on the market
1989
Two natural draft cooling towers withstand wind velocities of more than 300 km/h (highest wind load measured), Australia.

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