Design ED, EAD, and EDR Sliding-Stem Control Valves

1 Product Bulletin :ED. March 2002 Design ED. Design ED, EAD, and EDR. Sliding-Stem Control Valves Design ED, EAD, and EDR single-port Control Valves shown in figures 1 through 4 have balanced valve plugs, cage guiding, and metal-to-metal seating for all general applications over a wide range of process pressure drops and temperatures. These general purpose, Sliding-Stem Valves are used for either throttling or on-off Control of a wide variety of liquids and gases. The easy-eR Valve Family Design ED, EAD, and EDR Valves are part of the versatile easy-e family of industrial Control Valves from Fisher.

2 Easy-e Valves share the following characteristics: D Multiple trim material choices D Trim temperature capability with standard metal seats to 427_C (800_F). D FGM gaskets D Interchangeable, restricted-capacity trims and full-size trims match variable process flow demands D Different cage/plug styles provide particular flow characteristics for highly-specialized applications. The standard cage comes in three different flow characteristics: D quick-opening D linear D equal percentage D Noise in gaseous service may be attenuated by using Whisper TrimR I, Whisper Trim III (figure 10), and WhisperFlot cages (figure 12).

3 D Optional constructions provide full compliance with National Association of Corrosion Engineers (NACE) recommendations. See page 16. W1916 3 / IL. D 316 stainless steel packing box parts are Figure 1. Design ED Control Valve with Type 667 Actuator standard (including packing flange, studs, and nuts). D100017X012. Product Bulletin :ED. Design ED March 2002. Contents Features D Compliance with the Clean Air Act Optional ENVIRO-SEAL packing systems (figure 7) provide a superior stem seal to prevent the loss of process Features .. 2 fluid.

4 The ENVIRO-SEAL packing systems feature PTFE, graphite, or duplex packing with live-loading for reduced packing maintenance. C-seal Trim Description .. 6 D Stable Control at High Pressure Drops . Rugged cage guiding stabilizes the valve plug at all points during travel. Cage guiding reduces vibration and mechanical noise. ENVIRO-SEALR and HIGH-SEALt Packing Systems .. 6 D More Flow Capacity for Initial Investment . Streamlined flow passages provide greater capacities. When compared to globe Valves of the same line size by other manufacturers, the Design ED, EAD, and EDR provide more flow.

5 NACE Standard MR0175. Compliance .. 16 D Balanced Valve Plug Construction . Balanced valve plug construction permits use of smaller, lower-cost actuators from Fisher. Also, trim inventory costs are cut because dimensional Tables standardization permits use of most standard easy-e C-seal Shutoff Classification .. 5 trim parts. Available Constructions .. 6. Typical Combinations of Metal Trim Parts .. 7 D High-Temperature Capability with Class IV. WhisperFlo Metal Trim Part Materials and or Class V Shutoff Use of multiple graphite piston Valve Body/Trim Temperature Capabilities.

6 8 rings (figure 2) permit Class IV shutoff up to 593_C. Materials and Temperature Limits for (1100_F). All Other Parts .. 11 Use of C-seal trim (see figure 6) permits Class V. Valve Body/Trim Temperature Capabilities .. 14 shutoff up to 593_C (1100_F). Bonnet Selection Guidelines .. 15. Maximum Flow Coefficients .. 15 D Compliance with European Standards . Metal Trim Part Materials for Valves are available with dimensions specified by Compliance with NACE MR0175 EN/DIN standards. See figure 14. (Sour Service) Specifications .. 16.

7 Port Diameters, Valve Plug Travel, and D Sour Gas Service Capability Special trim stem and Yoke Boss Diameters .. 17 and bolting materials are available for applications Bolting Materials and Temperature Limits handling sour fluids and gases. These constructions for Bolting Compliance with NACE comply with the recommendations of National Specification MR0175 .. 17 Association of Corrosion Engineers (NACE). MR0175. Because of the care exercised by Fisher in procurement and manufacturing, additional testing and documentation to assure compliance with Dimensions.

8 19 the NACE standard is not required, in most cases. D Operating Economy Increased wear resistance provided by standard hardened stainless Specifications .. 22. steel trim means longer service life. D Maintenance Economy The valve body can stay in the pipeline during removal of trim parts. The ENVIRO-SEAL Packing System Design EDR valve also features easy valve access Specifications .. 24 without removing the actuator. 2. Product Bulletin :ED. March 2002 Design ED. CAGE GASKET. SHIM. DOUBLE. PISTON RINGS. (SMALLER SIZES. LOAD. HAVE TRIPLE.)

9 BONNET RING. PISTON RINGS). GASKET. RESTRICTED. SPIRAL TRIM. WOUND ADAPTORS. GASKET. W0977 4 / IL. RESTRICTED TRIM. W3362 1 / IL. 8 INCH VALVE WITH OPTIONAL MULTIPLE PISTON RINGS. FOR CLASS IV SHUTOFF. (ALSO AVAILABLE IN OTHER SIZES). stem . PTFE V-RING. PACKING. BONNET GASKET. BALANCING PORT. SHIM. GRAPHITE PISTON RING. CAGE. SPIRAL. WOUND GASKET. VALVE PLUG. PIN. SEAT RING. GASKET. SEAT RING. W0451 4 / IL. STANDARD 1 THROUGH 6 INCH CONSTRUCTION. Figure 2. Design ED Sectional 3. Product Bulletin :ED. Design ED March 2002. OPTIONAL LINER.

10 W0969 4 / IL. W2002 4 / IL. Figure 3. Design EAD Sectional Figure 4. Design EDR Sectional W6980 / IL. WhisperFlo TRIM. W6851-1 / IL. Figure 5. Typical Valve with WhisperFlo Aerodynamic Trim 4. Product Bulletin :ED. March 2002 Design ED. Table 1. C-seal Shutoff Classification VALVE Design VALVE SIZE PORT DIAMETER ANSI LEAKAGE. CAGE STYLE. (CLASS) Inches mm Inches CLASS. 2-1/2 73 2-7/8. Eq. %, Linear, Whisper I, Cav III, 1 stage 3 3-7/16. 3 73 2-7/8 V to 593. 593_C C (1100. (1100_F). F). Cav III, 2 stage [for port 4 73 2-7/8. diameters from 73.]