Transcription of Fisher ET, EAT, and ETR Sliding Stem Control Valves
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Fisher ET, EAT, and ETR Sliding Stem Control Valves
ET, EAT, and ETR Sliding - stem Control ValvesFisher ET, EAT, and ETR general-purpose Control Valves (figures 1, 2, and 3) are used for throttling or on-offcontrol of a wide variety of liquids and gases. All threevalve designs have single ports, balanced valve plugs,and cage guiding. Metal-to-PTFE seating for stringentshutoff requirements is standard in all Valves exceptthose with Cavitrolt III cages. Metal-to-metal seatingfor higher temperatures is standard for Valves withCavitrol III cages and optional for all other temperature limits of ET Valves can be extendedabove 232_C (450_F) by using PEEK(PolyEtherEtherKetone) anti-extrusion rings incombination with a spring-loaded PTFE seal. The PEEK anti-extrusion rings expand to close off the clearancegap between the plug and the cage where the PTFE seal may extrude at high temperatures and temperature limits are extended to 316_C (600_F)for non-oxidizing service and to 260_C (500_F) foroxidizing ET product line is available for a wide range ofapplications, including sulfide and chloridestress-cracking environments common to the oil andgas production industries.
www.Fisher.com Fisher™ ET, EAT, and ETR Sliding-Stem Control Valves Fisher ET, EAT, and ETR general-purpose control valves (figures 1, 2, and 3) are used for throttling or on-off
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