Customers use the HT (High Temperature) units often in applications where condensation of the media should not go back into the liquid phase. The media is coming from a reactor. Although the multi-orifice design could cope with the two-phase flow, the composition of the exhaust from the reaction should not be influenced.
Customers can use the standard Equilibar® back pressure regulators from up to 300°C, while they can use the HT units up to 450°C. We can use Graphite o-rings and Grafoil diaphragms to withstand these higher temperatures. In comparison with traditional valves the rangeability of 1:1000 is still very large. Compared to Equilibar back pressure regulators build for temperature up to 300°C, the rangeability is a little compromised.
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