Emerson Fisher RSS Manual de Instruções descarregar pdf (Página 11)

Instruction Manual

D101299X012

RSS Valve

September 2014

Table 4. Recommended Seat Ring Torque

Valve Size,

NPS

Newton

Meters

Pound-Force

Inches

Pound-Force

Feet

1-1/2

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Trim Maintenance

Key numbers are shown in figure 10.

Disassembly

1. Remove the actuator and the bonnet as described in steps 1 through 4 of the Replacing Packing and Bushing Inserts

section.

2. Inspect parts for wear or damage that would prevent proper operation of the valve.

3. To replace the bellows (key 6), unscrew the valve stem (key 5) in a counterclockwise rotation. Install the valve stem

into the new bellows with a clockwise rotation by hand. Do not overtighten.

4. To remove the valve plug (key 3), use pliers to remove the locking rope (key 9) that locks the valve plug to the

bellows(key6)asshowninfigure6.Thenunscrewtheplugfromthebellows.

Note

To avoid cold flow of the valve liner and deforming of the valve body seat ring threads and seat ring contact surfaces, promptly

install a replacement seat ring according to step 1 of the Assembly procedures.

5. Toremovetheseatring(key4),usetheseatringtool(figure7or8)thatcanbeorderedfromthePartsListsection

or made according to the dimensions in figure 8 and table 3. To avoid cold flow of the valve liner and deforming of

the valve body seat ring threads and seat ring contact surfaces, promptly install a replacement seat ring according

to step 1 of the Assembly procedures.

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Emerson Fisher RSS Manual de Instruções Página 11