Converting A Fisher E-Body To Type Ezr; Disassembly Of Type Ezr; Diaphragm Markings; Diaphragm Imprint Codes - Fisher EZR Instruction Manual

Type EZR
Converting a Fisher
®
Remove all trim parts from the main valve and clean
the body interior. Then follow procedure in Assembly
section to convert a Fisher
when installing a Type EZR trim package
make sure flow is up through the center
of the cage and down through the cage
slots. In some cases, correct flow path is
achieved by removing the body from the
line and turning it around. If this is done,
change the flow arrow to indicate the
correct direction. Damage may result if
flow is not in the correct direction. After
assembly, check the regulator for shutoff
and leakage to atmosphere.
Disassembly

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).
For the NPS 8 (DN 200) body, the
lifting flange (key 143) is capable
of supporting the full weight of the
regulator assembly and can be utilized
to lift bonnet if required.
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).
Assembly
1. Install the inlet strainer or shim (key 23) into the
body (key 1).
16
E-Body to Type EZR:
E-body to a Type EZR.
®
cAUTIOn
Note
ELASTOMER/FABRIC
MATERIAL CODE
ThICKNESS
LOCATE INK CODE
BETwEEN RADII
MATERIAL
INK CODE
MANUFACTURER
Figure 8. Diaphragm Markings
Table 11. Diaphragm Imprint Codes
STYLE MATERIAL
Imprint Ink Mark Imprint Ink Mark
2 17E68
4 17E88
2 130
5 17E97
when installing in a vertical orientation,
apply lubricant to the bottom of the inlet
strainer or strainer shim (key 23) to help
hold parts in place while installing cage.
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).
YEAR OF MANUFACTURE
CODE
RADIAL LOCATION
TO LOcATE
IMPRINT CODE
1
DOME IDENTIFICATION
ThICKNESS INK
CODE(USE ONE
LOcATIOn OnLY)
CODE
DIAPhRAGM MATERIALS
17E68 - Nitrile (NBR)
(low temperature)
17E88 - Fluorocarbon (FKM)
(high aromatic hydrocarbon
content resistance)
17E97 - Nitrile (NBR)
(high pressure and/or
erosion resistance)
Note