0.14 0.12 0.10 0.08 0.06 0.04 0.36 50 150 250 350 450 10 66 121 177 Temperature (°C) Temperature (°F) Permanent Deflection (in) Permanent Deflection (mm) 232 0.30 0.25 0.20 0.15 0.10 1400 1200 1000 800 600 400 200 0 96 0 100 200 300 400 500 600 -18 38 93 150 Temperature (°C) Temperature (°F) Pressure (psi) Pressure (bar) 204 260 316 82 68 54 41 27 14 0 8 JAMESBURY VALVE SOLUTIONS When combined with our unique and applicationproven seat designs, proprietary Xtreme seating materials broaden Wafer-Sphere butterfly valves’ temperature and pressure applicability. WithXtreme seats, application temperatures range from -320°F to 500°F and pressuresup to 1480 psi. Low permeability characteristics and controlled crystallinity produce a valve seat which resists permanent distortion. This results in longer cycle life, better thermal cycle performance, and better pressure cycle capability. Xtreme Expanding performance boundaries Typical Seat Recovery Permanent Deflection for 2500 ft•lbs (3390 Nm) maximum load Typical Pressure-Temperature Ratings Xtreme Filled PTFE Virgin PTFE Xtreme Filled PTFE Virgin PTFE
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