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The twin tube damper of PMG was established in the 90s and nominated by the PMG-partner ZF for World Design (WD). Since then, the innovative system has been impressing worldwide with unbeatable advantages: Twin tube dampers require lower gas pressure levels; 6-8 bar are enough to ensure precision damping as well as low noise levels. They offer lower friction, greater ride comfort, variable curve configuration and shorter installation lengths than the monotube. PMG currently supplies most of the volume of World Design banded piston and base valves to the EU. In the future, the export of base valves to China will increase noticeably.

How the twin tube damper works
With all telescopic shock absorbers, the resistance that a working piston has to overcome in an oil-filled pipe converts kinetic energy into thermal energy and prevents the vehicle from swinging. The working piston with the piston rod moves in a tube filled with oil. When the piston rod retracts, the oil in the twin tube damper is displaced into the second tube. With the single tube damper, this function is performed by a gas-filled chamber.