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Fisher® EZ easy-e Control Valve

Fisher® EZ easy-e Control Valve
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Instruction Manual Fisherr EZ easy-et Control Valve Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Scope of Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Educational Services . . . . . . . . . . . . . . . . . . . . . . . . . 2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Packing Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Packing Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . 6 Replacing Packing . . . . . . . . . . . . . . . . . . . . . . . . 9 Trim Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Lapping Metal Seats on Valves with Plain and Extension Bonnets . . . . . . . . . . . . . . . . 15 Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 ENVIRO-SEALt Bellows Seal and Bonnet . . . . . . . 20 Replacing a Plain or Extension Bonnet with an ENVIRO-SEAL Bellows Seal (Stem/Bellows Assembly) and Bonnet . . . . 20 Replacing an Installed ENVIRO-SEAL Bellows Seal (Stem/Bellows Assembly) . . . 22 Purging the ENVIRO-SEAL Bellows Seal Bonnet . . . . . . . . . . . . . . . . . . . 23 Parts Ordering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Parts Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Figure 1. Fisher EZ Valve with 657 Actuator and DVC6000 Digital Valve Controller Introduction Scope of Manual This instruction manual includes installation, maintenance, and parts information for NPS 1/2 through 4 Fisher EZ valves through CL600 ratings. Refer to separate manuals for instructions covering the actuator and accessories. Do not install, operate, or maintain an EZ valve without being fully trained and qualified in valve, actuator, and accessory installation, operation, and maintenance. To avoid personal injury or property damage, it is important to carefully read, understand, and follow all the contents of this manual, including all safety cautions and warnings. If you have any questions about these instructions, contact your Emerson Process Management sales office before proceeding. Description EZ valves (figure 1) are globe-style with integral end connections, post guiding, and quick-change trim. These valves are used in chemical or hydrocarbon processing applications or in applications that require control of nonlubricating, viscous, or other hard-to-handle fluids.

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Instruction Manual Table 1. Specifications End Connection Styles Cast Iron Valves Flanged: CL125 flat-face or 250 raised-face flanges per ASME B16.1 Steel and Stainless Steel Valves Flanged: CL150, 300, and 600 raised-face or ring-type joint flanges per ASME B16.5 Screwed or Socket Welding: Consistent with ASME B16.11 Buttwelding: All available ASME B16.25 schedules that are consistent with ASME B16.34 Maximum Inlet Pressure(1) Cast Iron Valves Flanged: Consistent with CL125B or 250B per ASME B16.1 Steel and Stainless Steel Valves Flanged: Consistent with CL150, 300, or 600 per ASME B16.34...

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Instruction Manual Check with your process or safety engineer for any additional measures that must be taken to protect against process media. If installing into an existing application, also refer to the WARNING at the beginning of the Maintenance section in this instruction manual. Figure 2. Optional Packing Lubricator and Lubricator/Isolating Valve LUBRICATOR/ISOLATING VALVE CAUTION When ordered, the valve configuration and construction materials were selected to meet particular pressure, temperature, pressure drop, and controlled fluid conditions. Responsibility for the safety of...

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Instruction Manual 4. With a leak-off bonnet construction, remove the pipe plugs (key 14) to hook up the leak-off piping. If continuous operation is required during inspection or maintenance, install a three-valve bypass around the control valve assembly. 5. If the actuator and valve are shipped separately, refer to the actuator mounting procedure in the appropriate actuator instruction manual. WARNING Personal injury could result from packing leakage. Valve packing was tightened before shipment; however, the packing might require some readjustment to meet specific service conditions. Check...

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Instruction Manual Note If the valve has ENVIRO-SEAL or HIGH-SEAL live-loaded packing installed, refer to instruction manuals ENVIRO-SEAL Packing System for Sliding Stem Valves, D101642X012, or HIGH-SEAL Live Loaded Packing System, D101453X012, for packing instructions. Figure 6 shows a typical HIGH-SEAL packing system. Figures 7 and 8 show typical ENVIRO-SEAL systems. Figure 3. PTFE V-Ring Packing Arrangements for Plain and Extension Bonnets UPPER WIPER (KEY 12) UPPER WIPER (KEY 12) PACKING FOLLOWER (KEY 13) FEMALE ADAPTOR PACKING RING FEMALE ADAPTOR PACKING RING MALE ADAPTOR MALE ADAPTOR...

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Instruction Manual Packing Lubrication Note ENVIRO-SEAL or HIGH-SEAL packing does not require lubrication. If an optional lubricator or lubricator/isolating valve (figure 2) is provided for PTFE/composition or other packings that require lubrication, it will be installed in an optional tapped hole in the bonnet. Use a good quality silicon-base lubricant. Packing used in oxygen service or in processes with temperatures over 260_C (500_F) should not be lubricated. To operate the lubricator, simply turn the cap screw clockwise to force the lubricant into the packing box. The...

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Instruction Manual If the packing is relatively new and tight on the stem, and if tightening the packing flange nuts does not stop the leakage, the valve stem may be worn or nicked so that a seal cannot be made. The surface finish of a valve stem is critical for making a good packing seal. If the leakage comes from the outside diameter of the packing, the leakage may be caused by nicks or scratches around the packing box wall. If performing any of the following procedures, inspect the valve stem and packing box wall for nicks and scratches. An illustration of a HIGH-SEAL live-loaded packing...

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