Temp. Valve for Static Bearings - Models 4103D/M
Datasheet_4103_Temperature_Valve_FEB18_Rev2
Page 4
Installation Design Considerations
• AMOT Model 4103 temperature valves are the
basic sensing units in a safety system and must
be tied into the system through connecting
tubing.
• Not recommended for installation where oil may
leak along the unsealed fuse rod shaft.
• Air/gas systems are more versatile and will give
faster response than an oil pressured system.
Oil is used in many systems within an engine as
shown in figure 1.
• Connecting tubing should be
5⁄16
” O.D. Close-
tee each sensing device to the control pressure
line and pipe them in series with the pressure
sensing valve being the last component in
the line. Care should be taken not to over
tighten the fitting in the VENT port since it may
interfere with the tripping action.
Model 4103D - figure 2
• Model 4103D valves can be installed by
themselves (figures 1 & 2), in adapters (figure
4) or in a well (figure 5).
• Control pressure source may be clean, dry air,
or a non-corrosive liquid such as lubricating oil
at up to 90 psi.
• Removal of one shim
12
changes the direction of
the vent port approximately 90° when the valve
is tightened. The shims may be removed as
necessary to obtain the required vent location.
• Care must be used to obtain the proper
relationship between the pin on the fuse rod
assembly and the valve ball
7
. Installed
depths (Table 1 on page 6) are available in ½”
increments from 1 ⅞” to 9 ⅞” and must be held
to /-
1⁄16
” when the unit is installed. To
accomplish this setting, use one or both of the
following methods:
- Air pressure - Install the valve in the mounting
hole and apply slight air pressure to the IN
port of the valve. Turn the valve into the hole
until it starts to leak at the VENT port, then
back off one turn and tighten in place with
locknut
6
.
- Gauge - Install the valve in the mounting hole
and thread it in until the gauge strikes the
3⁄16
” diameter fuse rod when inserted in the
VENT port. Turn the valve back out until the
gauge slides past the
3⁄16
” rod and seats fully,
with the small pin located in the gauge slot.
Remove the gauge and thread the valve in one
or two turns and tighten in place with locknut
6
.
Model 4103M - figure 3
• Control pressure source may be clean, dry air,
gas, or a non-corrosive liquid such as lubricating
oil at up to 60 psi. The use of gas may not be
desired in a hazardous location.
• When installing, allow at least ¼” of thread
engagement when the end of the fuse rod is at
the normal (untripped) position. To obtain the
proper relationship between the end of the fuse
rod assembly
7
and the valve ball
3
, use the
following method:
- Install the valve in the mounting hole and
apply slight air pressure to the IN port of the
valve. Turn the valve into the hole until it
starts to leak at the VENT port, then back off
one turn and tighten in place with locknut
5
.
Figure 2 - Model 4103D
Figure 3 - Model 4103M
