Type EZR
16
Converting a Fisher
®
E-Body to Type EZR:
Remove all trim parts from the main valve and clean
the body interior. Then follow procedure in Assembly
section to convert a Fisher
®
E-body to a Type EZR.
cAUTIOn
Disassembly of Type EZR:
1. Shutdown, isolate, and depressurize the main
valve and pilot.
2. Remove the cap screws (key 3). Lift up and
remove the bonnet (key 2) from the body (key 1).
3. Remove the diaphragm and plug assembly
(key 9) and bonnet O-ring (key 28). For NPS 2 x 1
(DN 50 x 25) sizes, use a screwdriver to remove
the upper adaptor (key 131).
4. Pull out the cage (key 7), O-ring (key 8),
and inlet strainer or strainer shim (key 23) (if
no strainer). For NPS 2 x 1 (DN 50 x 25) sizes,
remove the lower adaptor (key 132).
5. Clean parts and replace if necessary. To change
the O-ring (key 121) on a 6-inch (152 mm) cage with
attached restrictor plate (key 71), remove cap
screws (key 126).
1. Install the inlet strainer or shim (key 23) into the
body (key 1).
2. Lightly lubricate and install the cage O-ring (key 8).
3. Apply lubricant lightly to all O-rings or the mating
part before installing them.
4. Install the cage (key 7) and lightly lubricate and
install the bonnet O-ring (key 28).
To assemble a 6-inch (152 mm) cage with
attached restrictor plate (key 71), lightly lubricate
the O-ring (key 121) and place it on the restrictor
plate. Secure the cage to the restrictor plate with
the cap screws (key 126), using a torque of 10 to
12 foot-pounds (14 to 16 N•m).
STYLE
2 130
2 17E68
17E68 - Nitrile (NBR)
(low temperature)
4 17E88
17E88 - Fluorocarbon (FKM)
(high aromatic hydrocarbon
content resistance)
5 17E97
17E97 - Nitrile (NBR)
(high pressure and/or
erosion resistance)
Table 11. Diaphragm Imprint Codes
Figure 8. Diaphragm Markings
LOcATIOn OnLY)
TO LOcATE
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