Instruction Manual D100401X012 December 2008
EZ Valve
Fisherr EZ easy-er Control Valve Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Scope of Manual . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Packing Lubrication . . . . . . . . . . . . . . . . . . . . . . . 5 Packing Maintenance . . . . . . . . . . . . . . . . . . . . . . 6 Replacing Packing . . . . . . . . . . . . . . . . . . . . . . . 8 Trim Maintenance . . . . . . . . . . . . . . . . . . . . . . . . 10 Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Lapping Metal Seats on Valves with Plain and Extension Bonnets . . . . . . . . . . . . . . . . 12 Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 ENVIRO-SEALr Bellows Seal and Bonnet . . . 15 Replacing a Plain or Extension Bonnet with an ENVIRO-SEAL Bellows Seal (Stem/Bellows Assembly) and Bonnet . . . 15 Replacing an Installed ENVIRO-SEAL Bellows Seal (Stem/Bellows Assembly) . . 17 Purging the ENVIRO-SEAL Bellows Seal Bonnet . . . . . . . . . . . . . . . . . . 18 Parts Ordering . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Parts Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Introduction Scope of Manual This instruction manual includes installation, maintenance, and parts information for NPS 1/2 through 4 Fisherr 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 first D being fully trained and qualified in valve, actuator, and accessory installation,
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W8120A-1
Figure 1. Fisherr EZ Valve with 657 Actuator and DVC6000 Digital Valve Controller
operation, and maintenance, and D carefully reading and understanding the contents of this manual. 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.