Nickel based super alloy is used for valve and high temp NiCrFe alloy for the valve housing offers superior product life under the most demanding conditions. (Turbo rotary applications 2000F (1093C) exhaust temperatures)
High temperature silicone Nomex reinforced actuator diaphragm rated to 4 Bar
17-7 PH Stainless Steel actuator spring gives consistent pressure at high temperature, resists "relaxing" at temperature to 900F (483C)
Nitronic 60 Stainless Steel is used for the valve seat, valve bushing, and lower housing fastening hardware.