Emerson Fisher ET - Page 17

Instruction Manual
D100398X012
ET Valve
November 2017
17
CAUTION
When installing a valve plug on the ENVIRO‐SEAL stem/bellows assembly, the valve stem must not be rotated. Damage to
the bellows may result.
To avoid product damage, do not grip the bellows shroud or other parts of the stem/bellows assembly. Grip only the flat
areas on the stem where it extends out of the top of the bellows shroud.
Note
The ENVIRO‐SEAL stem/bellows assembly has a one‐piece stem.
CAUTION
To avoid damaging parts, do not grip the valve plug on any seating surface in the following procedure.
6. To attach the valve plug to the stem of the new ENVIRO‐SEAL stem/bellows assembly, first attach the plug to the
adaptor (key 24). Locate the adaptor. Notice that a hole has not been drilled in the threads where the plug screws
onto the adaptor. Secure the valve plug in a soft‐jaw chuck or other type of vise. Do not grip the plug on any seating
surface. Position the plug in the chuck or vise for easy threading of the adaptor. Thread the adaptor into the valve
plug and tighten to the appropriate torque value.
7. Select the proper size of drill bit and drill through the adaptor using the hole in the valve plug as a guide. Remove
any metal chips or burrs and drive in a new pin to lock the plug/adaptor assembly together.
8. Attach the plug/adaptor assembly to the ENVIRO‐SEAL stem/bellows assembly by first securing the stem/bellows
assembly in a soft‐jaw chuck or other type of vise so that the jaws of the chuck or vise grip the flats of the stem
extending out of the top of the bellows shroud. Screw the valve plug/adaptor assembly onto the valve stem.
Tighten as necessary to align the pin hole in the stem with one of the holes in the adaptor. Secure the adaptor to the
stem with a new pin.
9. Inspect the seat ring (key 9) and soft seat parts (keys 21, 22, and 23); replace, if necessary.
10. Place a new gasket (key 10) into the valve body in place of the bonnet gasket. Install the new stem/bellows
assembly with valve plug/adaptor by placing it into the valve body on top of the new bellows gasket.
11. Place a new gasket (key 22) over the stem/bellows assembly. Place the new ENVIRO‐SEAL bonnet over the
stem/bellows assembly.