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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.

www.Fisher.com Fisher™ ET, EAT, and ETR Sliding-Stem Control Valves Fisher ET, EAT, and ETR general-purpose control valves

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Transcription of Fisher ET, EAT, and ETR Sliding Stem Control Valves

1 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.

2 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. To discuss availableconstructions, contact your Emerson sales office orLocal Business Partner and include the applicablecodes and standards required for these easy-et Valve FamilyET, EAT, and ETR Control Valves are part of the versatileeasy-e family of Fisher industrial Control Valves .

3 Easy-evalves share the following characteristics:n Multiple trim material choicesn Interchangeable, restricted-capacity trims andfull-sized trims to match variable process flowdemandsFISHER ET Control VALVEWITH 667 ACTUATORW1916-3n Different cage/plug styles that provide particularflow characteristics for highly-specializedapplications. The standard cage comes in threedifferent flow characteristics: quick-opening, linear,or equal Whisper Trimt I, Whisper Trim III (figure 6), andWhisperFlot cages (figures 4 and 5) attenuateaerodynamic noise in gaseous To help eliminate cavitation damage in aproperly-sized valve, a standard-travel, Cavitrol III,one-stage cage (figure 8) and a long-travel, CavitrolIII, two-stage cage are available in the NPS 1through NPS 8 ET Control ValveD100022X012 Product :ETAugust 2017ET ValveD100022X012 Product.

4 ETAugust 2017 2 Featuresn Compliance with the Clean Air Act ENVIRO-SEAL packing systems (figures 9 and 10) that provide animproved stem seal to help prevent the loss ofprocess fluid are available. These packing systemsfeature PTFE or Graphite ULF packing withlive-loading for reduced packing PTFE Seating for Long-Lasting ShutoffCapability Controlled compression of standardseat construction protects PTFE disk between metaldisk seat and disk retainer (figure 1). Only the edgeof the PTFE disk is contacted by the flowstreamduring normal operation. Excellent shutoff ismaintained by a backup ring or spring-loading thatforces the valve plug seal ring against the cage(figure 1).

5 N Valve Plug Stability Rugged cage guiding provideshigh valve plug stability, which reduces vibrationand mechanical Cost-Effective Operation and MaintenanceEconomy Increased wear resistance of hardenedstainless steel trim means longer-lasting inspection or maintenance is necessary, thebody can stay in the pipeline during removal of trimparts. Balanced valve plug construction permits useof smaller, lower-cost Fisher actuators. The ETRvalve also permits easy body interior access withouthaving to remove the bonnet or actuator (figure 3).And, trim inventory costs are cut becausedimensional standardization permits use of moststandard easy-e trim Compliance with European Standards Valves areavailable with dimensions specified by EN/DINstandards.

6 See figure Sour Service Capability Unless otherwise noted,references are to NACE MR0175-2002. Optionalmaterials are available to meet NACE MR0103 andNACE MR0175 / ISO 15156. Material requirementsunder these standards vary by edition and year ofissue; the specific standard must be of ContentsFeatures Packing SystemSpecifications and HIGH-SEALP acking Systems Class VI ShutoffCapabilities Constructions Classifications VI Shutoff Availability VI Trim Materials Materials and Temperature Limits forOther Parts Body/Trim Temperature Capabilities Selection Guidelines Flow Coefficients Diameters, Valve Plug Travel, stem and Yoke Boss Diameters Trim Parts Materials and Temperature Limits Information ValveD100022X012 Product :ETAugust 2017 3 SpecificationsAvailable ConfigurationsET.

7 Single-port, globe-style Control valve with cageguiding, balanced valve plug, and push-down-to-closevalve plug action (figure 1)EAT: Angle version of ET Control valve, used tofacilitate piping or in applications where aself-draining valve is desired (figure 2)ETR: Same as ET Control valve except withpush-down-to-open valve plug action (figure 3)Valve Sizes and End Connection StylesFlanged raised-face per EN 1092-1/B and see table 1 Maximum Inlet Pressures and Temperatures(1,2)As listed below, unless limited by maximum pressuredrop or material temperature capabilitiesValves with Cast Iron BodiesFlanged: Consistent with CL125B or 250B per with Steel and Stainless Steel BodiesFlanged: Consistent with CL150, 300, and 600(3) perASME or Welding: Consistent with flanged CL600per ASME Pressure Drops(2)Same as maximum inlet pressure for specificconstruction defined above, except where furtherlimited as follows:All Valves Except Those with Cavitrol III, Whisper TrimIII, and WhisperFlo Cages: See figure with Cavitrol III Cages: See figure with Whisper Trim III Cages: P/P1maximum for levels A1 through D3 Valves for NACE MR0175 / ISO 15156 and MR0103.

8 See figure 13 Shutoff Classifications Per ANSI/FCI 70-2 and IEC 60534-4 Class IV, V, or VI. See tables 2, 3, or 4 Construction MaterialsBody, Bonnet, and Bonnet Spacer or Bottom Flange, ifused: JCast iron, JWCC carbon steel, or JLCC carbon steel, JWC9 chrome moly steel, JCF8M(cast 316 stainless steel), or Jother materials uponrequestValve Plug, Cage, and Metal Seating Parts:All Valves Except Those with Cavitrol III or Whisper TrimIII Cages: See table 5 Valves with Cavitrol III Cages: See table 6 Valves with Whisper Trim III Cages: See table 8 Valves with WhisperFlo Cages: See table 7 Bellows Seal Assembly: J316L stainless steel orJN04400 All Other Parts.

9 See table 9 Material Temperature Capabilities(2)Body/Trim Combinations:All Valves Except Those with Cavitrol III or Whisper TrimIII Cages: See figure 11 Valves with Cavitrol III Cages: See table 6 Valves with Whisper Trim III Cages: See table 8 Valves with WhisperFlo Cages: See table 7 Bolting For NACE MR0175 / ISO 15156 and MR0103:See table 19 Bonnets: See table 11 All Other Parts: See table 9 Flow CharacteristicsStandard Cages: JQuick-opening, Jlinear, orJequal percentageWhisper Trim, WhisperFlo, and Cavitrol Cages: LinearFlow DirectionsETStandard Cage: Normally downWhisper Trim and WhisperFlo Cages: Always upCavitrol Cage: Always downEATS tandard Cage with Liner for Metal Seat: NormallydownStandard Cage without Liner: Flow up or downWhisper Trim and WhisperFlo Cages: Always upETRS tandard Cage: Normally upWhisper Trim Cage: Always downFlow Coefficients and Noise Level PredictionSee table 12 and Catalog 12- continued -ET ValveD100022X012 Product :ETAugust 2017 4 Specifications (continued)Port Diameters and Maximum Valve Plug TravelsSee tables 13, 15, and 16 Yoke Boss and stem DiametersSee table 14 Typical Bonnet StylesSee table 11 Packing ArrangementsStandard Material.

10 Single PTFE V-ringOptional Materials: See table 9 ENVIRO-SEAL Packing Systems: See figures 9 and 10 ENVIRO-SEAL Packing Systems in vacuum service:Standard ENVIRO-SEAL packing systems can be usedin vacuum service with packing rings in standardorientation. Do not reverse the ENVIRO-SEAL PTFE packing rings. Also, see Bulletin :061,ENVIRO-SEAL Packing Systems for Sliding -StemValves (D101633X012).Approximate WeightsNPS 1: 14 kg (30 lb)NPS 1-1/2: 20 kg (45 lb)NPS 2: 39 kg (85 lb)NPS 2-1/2: 45 kg (100 lb)NPS 3: 57 kg (125 lb)NPS 4: 77 kg (170 lb)NPS 6: 159 kg (350 lb)NPS 8: 408 kg (900 lb)Optional Safety Instrumented System ClassificationSIL3 capable certified by exida Consulting LLCA dditional OptionsJLubricator, Jlubricator/isolating valve, Jdrilledand tapped connection in extension bonnet forleak-off service, Jbody drain plug, Jstyle 3fabricated extension bonnet made on order to aspecific length for cryogenic service, Jstyle NSbonnet for seismic service requirements, Jpackingssuitable for nuclear service, JClass V shutoff for ETabove 232_C (450_F) using PEEK anti-extrusion rings1.


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