Instruction Manual

Instruction Manual

D100391X012

EDR and ETR Valves

April 2011

D Check with your process or safety engineer for any additional measures that must be taken to protect against process

media.

Valve parts are subject to normal wear and must be inspected and replaced as necessary. Inspection and maintenance

frequency depends on the severity of service conditions. This section includes instructions for trim maintenance,

packing maintenance, and packing lubrication. All maintenance operations may be performed with the valve installed

in the pipeline.

Note

If the valve has ENVIRO‐SEALt live‐loaded packing installed (figure 8, 9, or 10), see the Fisher instruction manual entitled

ENVIRO‐SEAL Packing System for Sliding‐Stem Valves for packing instructions.

Trim Maintenance

Disassembly

Note

Whenever a gasket seal is disturbed by removing or shifting gasketed parts, install a new gasket upon reassembly. This is necessary

to ensure a good gasket seal.

Key number locations are shown in figure 11 or 12 unless otherwise indicated.

Figure 3. Valve Plug Assembly

STEM

DISK SEAT

DISK

VALVE PLUG

CAGE

CASTLE NUT

COTTER PIN

ETR OR EDR

NOTE:

ETR USES A SEAL RING (KEY 24) AND A BACKUP RING (KEY 25) (SEE FIGURE 11).

40A5479‐B

B2360