The well-known machine developer Matti Sampo developed the Titan prototype in 1984, featuring chassis steering and wheel-specific hydraulic motors. At the end of the same year, he sold the rights to the product to Valmet. In addition to environmental management, the machine was aimed at agricultural use for fieldwork and loading tasks.

In 1987, the red H 800 and its yellow industrial version H 810 were introduced to the market. The engine was a 110-horsepower four-cylinder turbo. The power transmission was based on separate hydraulic pumps and David Brown hydraulic motors on the front and rear axles. There were three speed ranges (0-11, 0-17, and 0-30 km/h). Speed ranges and driving direction were selected electrically. At the rear, there was a 5-ton lifting device equipped with drawbar sensing. A lifting device could also be fitted at the front if needed. The working hydraulics featured a 140 l/min variable displacement axial piston pump. The power take-off was available mechanically at the front and hydraulically driven at the rear. The cab, located on the front frame, followed design principles learned from other Valmet tractors. The control panel could rotate 180 degrees for reverse driving.

Production of the H 800/810 remained limited to a few dozen units. It was too expensive, and its off-road capability was poor.

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