If Stroke is Too Short:
To correct, turn the diaphragm assembly
toward you (unthreading it from the stem)
bringing the disc orifices into alignment
with the plate orifices.
If Stroke is Too Long:
To correct, turn the diaphragm assembly
away from you (threading it farther onto the
stem) bringing the disc orifices into alignment
with the plate orifices.
are in perfect alignment that the boltholes are in alignment.
If an adjustment needs to be made to align the bolthole,
make the adjustment by turning the diaphragm assembly
clockwise.
10. Install and tighten the spring housing bolts (5) per the torque
instructions on the back page.
Stroke Adjustment
Disc Pin
1.
Remove the disc and the plate, following the procedure
outlined under VALVE SEATS.
2.
Remove the diaphragm as outlined under DIAPHRAGM
REPLACEMENT.
3.
Holding the disc pin assembly with an open-end wrench,
loosen the locknut (13). The stem (11) can now be
unscrewed from the disc pin (14) and the locknut re-
moved from the stem..
4.
Remove the stem (11) upward through the diaphragm
area and the disc pin (14) through the body orifice.
5.
Check the condition and clean all parts. Clean the lower
guide hole in the valve body and replace defective parts.
6.
Reassemble in reverse order and follow the procedures
outlined under DIAPHRAGM REPLACEMENT and VALVE
SEATS for proper adjustment. When reassembling, thread
the stem (11) fully into the disc pin (14) and then tighten
the locknut (13).
Troubleshooting
If You Experience Erratic Control:
Oversizing causes cycling and hunting, and reduces the
rangeability of the valve. Make certain that your sizing is
correct.
Steam traps downstream may require maintenance.
Safety valve may be defective and need repair.
There may be excessive foreign matter on the seats, and
seats should be removed and cleaned.
Valve stroke may need readjustment.
Valve disc may not be moving freely. Check disc guide
clearance and correct if needed.
If Valve Will Not Operate:
Diaphragm may be ruptured and require replacement.
Adjusting spring may be broken and require replacement.
Spring may be set improperly and require resetting.
Ordering Spare Parts
Use only genuine Jordan Valve parts to keep your valve in
good working order. So we can supply the parts, which were
designed for your valve, we must know exactly which product
you are using.
The only guarantee to getting the correct
replacement parts is to provide your Jordan Representa-
tive with the valve serial number. This number is located on
the valve identification tag. If the serial number is not
available, the parts needed for your valve might be deter-
mined using the following information:
•
Model number
•
Valve Body size
•
Seat Material and Cv rating
•
Spring Range or Set Point
•
Trim Material
•
Part Name - Number and Quantity (see parts list chart).
Note: Without a valve serial
number, any parts ordered
incorrectly are subject to a
minimum 25% restock
charge when returned.
1 The stroke adjustment is made with the spring
housing and adjusting spring removed from
the valve.
2 The valve orifices should be open and in
perfect alignment when the diaphragm
assesmbly is pressed against the valve body
as illustrated.
3 The valve stroke adjustment
is determined by how far the
stem is screwed into the
diaphragm plate. Rotate the
diaphragm assembly to raise
or lower the valve disc.
Unthread the diaphragm
assembly partially to lower
the disc or thread the stem
deeper into the assembly to
raise the disc.
Lower Diaph. Plate
Upper Diaph. Plate
Diaphragm
Vise
Disc Pin
Plate
Disc Guide
Cap
Disc
Orifice
Stem
