WaRning
!
To avoid personal injury, property
damage or equipment damage caused
by sudden release of pressure or
explosion of accumulated gas, do
not attempt any maintenance or
disassembly without first isolating the
regulator from system pressure and
relieving all internal pressure from
the regulator.
Types 67D, 67DR, 67DS and 67DSR
Trim Maintenance
Key numbers are referenced in Figures 3 and 4.
1. Unscrew the spring retainer (key 48) and separate
the spring retainer and O-ring (key 14) from the
body (key 1).
2. Remove the valve plug (key 57) from the spring
retainer (key 48). Inspect the removed parts for
damage and debris. Replace any damaged parts.
Apply a high quality lubricant to the O-ring (key 49)
before reassembling.
3. To remove the valve stem (key 11), grasp the end
and pull it straight out of the body (key 1). Inspect
the parts for damage and debris. Replace any
damaged parts. The valve stem 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 stem. Apply a high quality
lubricant to the O-ring (key 50) before reinstalling
the valve stem.
4. Slide valve plug (key 57) onto valve stem (key 11).
Apply lubricant to O-ring (key 14) and thread in
spring retainer (key 48). Torque spring retainer to
10 to 12 ft-lbs / 14 to 16 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 57) strokes smoothly and
approximately 1/16 in. / 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 in-lbs / 1.9 to 3.9 N•m.
note
on Types 67DS and 67DSR, 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 hex nut (key 19) if used, and
install the closing cap (key 33) if used
.
Types 67DF, 67DFR, 67DFS and 67DFSR
Filter Element and Trim Maintenance
Key numbers are referenced in Figures 5 and 6.
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). Remove the
screw (key 65) that retains the filter (key 6) and
remove the filter and filter gasket (key 66).
2. Inspect the removed parts for damage and debris.
Replace any damaged parts. If a replacement is
not available, the filter element may be cleaned.
3. To inspect the valve plug (key 57), valve stem
(key 11) and the valve seat (key 58), unscrew the
spring retainer (key 48) and separate from the
body (key 1). To remove the valve plug, grasp
the valve plug and pull it straight out of the spring
retainer. To remove the valve stem (key 11), grasp
the end and pull it straight out of the body (key 1).
Inspect the parts for damage and debris. Inspect
the valve seat (key 58) for damage or wear.
6
67D Series
