Fisher EUD Instruction Manual Download Page 23

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EU and EW Series Valves

Instruction Manual

August 2010

Figure 14. Typical Fisher WhisperFlo Trims

EWD, EUD, EWT

EWT-2, EUT2

CAP SCREW

SEAT RING

WhisperFlo CAGE

CAGE RETAINER

BONNET

Summary of Contents for EUD

Page 1: ...20 CL150 through 600 Fisher EUD EUT EUT 2 EWD EWT and EWT 2 valves and the NPS 16 and 20 x 16 CL900 EUD EUT 2 EWD and EWT 2 valves Size designations such as NPS 20 x 16 are end connection size x nomi...

Page 2: ...vitrol Trim Class V EUT EUT 2 EWT and EWT 2 with Soft Metal Seats Class V Shutoff Classifications per ANSI FCI 70 2 and IEC 60534 4 continued EUD and EWD with Metal Seats Standard Class III Optional C...

Page 3: ...instruction manual and in any applicable standard limitations should not be exceeded Description All valve types covered in this manual EUD EUT EUT 2 EWD EWT and EWT 2 valves can be used for either th...

Page 4: ...the valve is part of a complete control valve assembly Installation WARNING To avoid personal injury or property damage resulting from the sudden release of pressure do not install the valve assembly...

Page 5: ...rtical above the valve Other positions may result in uneven valve plug and cage wear and in improper operation Support the actuator if it is not installed in the vertical position For more information...

Page 6: ...that the above measures stay in effect while you work on the equipment D The valve packing box may contain process fluids that are pressurized even when the valve has been removed from the pipeline P...

Page 7: ...tion or other packings that require lubrication it will be installed in place of the 1 4 NPT pipe plug key 14 figure 5 Use a silicon base lubricant To operate the lubricator turn the cap screw clockwi...

Page 8: ...ew valve stem is critical for making a good packing seal If the leakage comes from the outside diameter of the packing it is possible that the leakage is caused by nicks or scratches around the packin...

Page 9: ...e that the valve body fluid pressure has been relieved 4 Hex nuts key 16 figures 7 or 8 attach the bonnet to the valve body Loosen these nuts or cap screws approximately 3 mm 1 8 inch Then loosen the...

Page 10: ...could cause packing box leakage or damage to the new packing If the surface condition cannot be improved by light sanding or honing with a tool similar to an automotive brake cylinder hone replace the...

Page 11: ...nd for making a seal with the seal ring key 28 The seating surfaces of the valve plug key 2 and seat ring key 9 are critical for proper shutoff Assume all these parts are in good condition and protect...

Page 12: ...ricant Then gently stretch the seal ring and work it over the top edge of the valve plug Give the PTFE material in the seal ring time to cold flow during the stretching procedure Avoid jerking sharply...

Page 13: ...at ring to the cage using minimal heat Two welds 6 mm 1 4 inch long and 180 degrees apart are required Install the seat ring seal ring key 6 so that its open side faces the valve stem for Cavitrol III...

Page 14: ...e valve body Remove the temporary screws or bolts Secure the seat ring key 9 with the cap screws key 49 Tighten the cap screws in a criss cross pattern to a torque of 39 NSm 29 lbfSft for NPS 12 and 1...

Page 15: ...icate the outside diameter of the seat ring seal ring with lithium grease 3 Slide the valve plug key 2 and stem assembly into the cage For valves with a seal ring make sure the valve plug seal ring ke...

Page 16: ...EU and EW Series Valves Instruction Manual August 2010 16 Figure 9 Typical Fisher EUT or EWT Valve with HTS1 Option...

Page 17: ...ing the following instructions CAUTION To avoid leakage when the valve is returned to service use appropriate methods and materials to protect all sealing surfaces of the new trim parts while assembli...

Page 18: ...t to the threads on the plug Then place the Bore Seal retainer onto the plug and tighten the retainer using an appropriate tool such as a strap wrench For flow down constructions skip to step 7 6 Remo...

Page 19: ...ce applied and the valve plug fully seated align the actuator travel indicator scale with the lower end of valve travel Refer to the appropriate actuator instruction manual for information on this pro...

Page 20: ...ng to the following procedure for lapping metal seats remachining metal seats or other valve plug maintenance procedures as appropriate Lapping Metal Seats Bore Seal Constructions Before installing a...

Page 21: ...erosion the valve plug must be initially seated with sufficient force to overcome the resistance of the Bore Seal and contact the seat ring You can correctly seat the valve plug by using the same for...

Page 22: ...g EUT 2 and EWT 2 valves only 28 Piston Ring 2 req d EUD and EWD valves only 49 Cap Screw EUD EWD EUT and EWT valves only 219 PEEK Anti extrusion ring EUT and EWT valves only Bonnet 1 Valve Bonnet 3 P...

Page 23: ...EU and EW Series Valves Instruction Manual August 2010 23 Figure 14 Typical Fisher WhisperFlo Trims EWD EUD EWT EWT 2 EUT 2 CAP SCREW SEAT RING WhisperFlo CAGE CAGE RETAINER BONNET...

Page 24: ...st We reserve the right to modify or improve the designs or specifications of such products at any time without notice Neither Emerson Emerson Process Management nor any of their affiliated entities a...

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