Instruction Manual

67C Series
6
do not attempt any maintenance or
disassembly without rst isolating the
regulator from system pressure and
relieving all internal pressure from
the regulator.
Types 67C, 67CR, 67CS and 67CSR
Trim Maintenance
KeynumbersarereferencedinFigures3,4and12.
1. Remove four bottom plate screws (key 3) from the
bottom plate (key 39) and separate the bottom
plate and O-ring (key 4) from the body (key 1).
2. Inspect the removed parts for damage and debris.
Replace any damaged parts.
3. To remove the valve cartridge assembly, grasp the
end of cartridge (key 10) and pull it straight out of
body (key 1). Replace with new cartridge assembly.
The cartridge assembly may be disassembled and
parts may be cleaned or replaced. If the soft seat
(key 15) was removed, make sure it is properly
snapped into place before installing the valve
cartridge assembly.
4. Check O-ring (key 14) for wear and replace, if
necessary.ApplylubricanttotheO-ringandplace
inthebody.Aligncartridgekeytokeywayinbody
and insert. Reinstall the O-ring (key 4), secure
the bottom plate (key 39) with screws (key 3) and
torqueto15to30-inch-pounds/1.7to3.4N•m.
Diaphragm Maintenance
KeynumbersarereferencedinFigures3and4.
1. Backouttheadjustingscreworhandwheel(key18)
until compression is removed from the spring (key 17).
2. Remove the spring case screws (key 3) to separate
the spring case (key 7) from the body (key 1).
Remove the upper spring seat (key 20) and spring
(key 17).
3. Remove the diaphragm assembly (key 16),
inspect the diaphragm and replace the assembly,
if necessary.
4. Place the diaphragm assembly (key 16) on the
body (key 1) as shown in Figure 3 or 4. Push down
on the diaphragm assembly to make sure the valve
plug (key 11) strokes smoothly and approximately
1/16 inch / 1.6 mm.
Note
In step 5, if installing a control spring of
a different range, be sure to delete the
spring range originally appearing on the
label and indicate the new spring range.
5. Stack the control spring (key 17) and upper spring
seat (key 20) onto the diaphragm assembly (key 16).
6. Install the spring case (key 7) on the body
(key 1) with the vent oriented to prevent clogging
or entrance of moisture. Install the six spring case
screws (key 3) using a crisscross pattern and
torqueto15to30-inch-pounds/1.7to3.4N•m.
Note
On Types 67CS and 67CSR, lubricate
the adjusting screw (key 18) thread to
reduce galling of the Stainless steel.
7. When all maintenance is complete, refer to the
StartupandAdjustmentsectiontoputtheregulator
back into operation and adjust the pressure setting.
Tighten the locknut (key 19) if used and install the
closing cap (key 33) if used.
Types 67CF, 67CFR, 67CFS and 67CFSR
Filter Element and Trim Maintenance
KeynumbersarereferencedinFigures5,6and12.
1. Remove four dripwell screws (key 3) from the
dripwell (key 5) and separate the dripwell and
O-ring(key4)fromthebody(key1).Thelter
retainer(key9),thrustwasher(key37),lter
element (key 6) and gasket (key 26) may come
off with dripwell. If not, remove these parts.
2. Inspect the removed parts for damage and debris.
Replace any damaged parts. If a replacement is
notavailable,thelterelementmaybecleaned.
3. To remove the valve cartridge assembly, grasp
the end of cartridge and pull it straight out of body
(key 1). Replace with new cartridge assembly.
The cartridge assembly may be disassembled and
parts may be cleaned or replaced. If the soft seat
(key 15) was removed, make sure it is properly
snapped into place before installing the valve
cartridge assembly.
4. Check O-ring (key 14) for wear and replace, if
necessary.ApplylubricanttotheO-ring(key14),then
align cartridge key to keyway in body and insert.
Reinstallthegasket(key26),lterelement(key6),