Emerson Fisher easy-e EW Instruction Manual download pdf (Page 21)

Instruction Manual

D100399X012

EW Valve

September 2014

Figure 9. Fisher EWD with C-seal Trim

A6790

FLOW DOWN

FLOW UP

VIEW A

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6. Install the new plug/retainer assembly with C-seal plug seal on the new stem following the appropriate instructions

in the Trim Replacement section of this manual.

7. Install piston rings by following instructions in the Trim Replacement section of this manual.

8. Remove the existing valve actuator and bonnet following the appropriate instructions in the Replacing Packing

sectioninthismanual.

CAUTION

Do not remove the existing valve stem from the valve plug unless you are planning to replace the valve stem.

Never reuse an old valve stem with a new plug or reinstall a valve stem after it has been removed. Replacing a valve stem

requires drilling a new pin hole in the stem. This drilling weakens the stem and may cause failure in service. However, a

used valve plug may be reused with a new valve stem.

9. Remove the existing valve stem and plug, cage, and seat ring from the valve body following the appropriate

instructions in the Trim Removal section in this manual.

10. Replace all gaskets according to appropriate instructions in the Trim Replacement section in this m anual.

11. Install the new seat ring, cage, valve plug/retainer assembly, and stem into the valve body and completely

reassemble the valve package following the appropriate instructions in the Trim Replacement section in this

manual.

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Emerson Fisher easy-e EW Instruction Manual Page 21