With the new VD 65HT high-pressure valve (260 bar at 630°C), Dr. Thiedig has risen to the challenge of meeting the operating conditions of modern supercritical power plants.
A special design with regard to packing gland and valve seat also permits the use of austenitic materials. The utilization of the available wall thickness in terms of welding technology inevitably leads to high testing requirements, which can be solved in-house within the scope of the operating approvals. This makes it possible to comply with all the usual regulations, such as AD 2000 (HP0) or EN 13445, without any problems.
The goal of energy suppliers is to obtain the most energy from the limited raw materials available, in other words to achieve the highest possible efficiency. In order to further increase the efficiency of thermodynamic cycles, power plants are designed and built with higher operating temperatures. This also leads to a relative reduction in CO2 emissions, making coal-fired power plants more environmentally friendly.
These so-called super-octite power plants place special demands on planners and suppliers. With the ever higher operating temperatures, the material stresses are also growing. To meet these, we have developed special high-pressure valves and sample coolers.