Jordan Valve Mark 89 Series- Three-Way Temperature Regulator - Manual (Page 3)

-3-
then be cleaned. Place a 4/0 polishing cloth or jew-
eler’s cloth on a smooth, flat surface, and polish the
lapped surfaces. If the parts are badly scarred, do not
attempt to re-lap them, but return them to the factory
for repair or replacement.
A 0.005 feeler gauge should be used to check the
7.
clearance between the valve disc and the disc guides.
If the clearance is less than 0.005”, clean the disc
guides with a smooth file.
B. Reassembly
Place the disc guide in the body bore with the index 1.
pin on the same side as the scribe line on the valve
body.
Place the disc in the aperture of the disc guide and
2.
engage the disc pin.
In placing the plate in the body, notice that the index
3.
pin hole in the lapped surface of the plate engages
the index pin of the disc guide.
In replacing the valve cap, notice that there is an in-
4.
dex pin secured in the valve cap. This index pin must
be engaged in the index pin hole of the valve plate.
To properly align the valve cap, a slight rotation is nor-
5.
mally sufficient to align the index pin with the index
pin hole in the downstream side of the valve plate.
Tighten the cap screws uniformly, being cautious not
6.
to apply too much torque. See table on page 4 for
torque recommendations.
REPEAT DISASSEMBLY AND REASSEMBLY PER “A” AND “B”
ABOVE FOR SECOND SET OF SEATS.
Disc Pin
Remove the valve disc and valve plate (3, 4) following 1.
the procedure outlines under “Valve Seats” above.
Loosen the stem connector nut and bolt (18, 19) an
2.
remove connector assembly (17).
Back out the four allen headscrews (50) which will
3.
allow the valve body (49) to be separated from the
valve yoke (20).
Loosen the disc pin nut (7) and rotate the disc pin
4.
(6) counterclockwise, pulling valve stem (16) upward
while doing so. Do not remove the valve stem com-
pletely but raise it sufficiently so that the disc pin may
be removed by pulling up and out.
Replace the disc pin so that the case “B” on the disc
5.
pin faces up and is on the normally open side of the
body and reassemble in reverse order following the
procedures outlines under VALVE SEATS and STROKE
ADJUSTMENT.
Packing
Remove connector assembly (17). 1.
Remove both packing flange nuts (15). 2.
Remove packing gland (12) and packing follower (11). 3.
Should packing spring (9) not eject packing set (10), a 4.
slight amount of downstream pressure might be nec-
essary to remove the packing set.
Remove packing retainer (13) and packing spring (9).
5.
Clean packing bore with solvent and blow out thor- 6.
oughly.
Assemble in reverse order and tighten packing nut
7.
(15) so that packing follower (11) bottoms out on top
of valve body.
Engage valve stem (16) and actuator stem (22) with
8.
connector. Tighten connector nut and bolt. No stroke
adjustment is required.
Valve Stroke Adjustment
If the temperature regulator requires a stroke adjustment
after maintenance on one of the above points, follow these
procedures:
Remove the cooling line seats (normally closed) as 1.
outlined above in “Valve Seat Disassembly” section.
Make sure that the actuator stem (22) is stroked fully
2.
upward by the spring (27).
Loosen the disc pin locknut (7).
3.
Loosen the stem connector bolt (18) only enough to 4.
allow the stem (16) to rotate. DO NOT remove the
stem connector (17). Proper positioning of the valve
stem and actuator stem must be maintained during
adjustment of seats.
Orifices on the disc and plate must be in perfect
5.
alignment in the full open position of the by-pass
seats. Adjust the positioner of the disc on the plate by
rotating the valve stem until the seats are in perfect
alignment in the fully open position.
Valve Stroke Adjustment
The thermal system is hermetically sealed unit con- 1.
sisting of a sensing bulb, capillary tubing, protective
armor, and actuator assembly. This unit contains the
thermostatic charge that operates the TCV. Please do
not tamper with it. In case the charge is lost, the ther-
mal system must be replaced as a complete unit. It is
not repairable in the field and must be returned to the
factory for repairs.
The thermal system is easily removed in the field by
2.
releasing the spring 927) compression (by rotating the
adjusting wheel (24) downwards and removing the
four filister head actuator screws (30). Do not remove
the adapter plate (31). The valve stroke adjustment will
not be affected if the steps are followed carefully.
Thermometer
If your TCV is equipped with a dial thermometer, it can be
re-calibrated by turning the calibrator screw slightly, or re-
moving the needle and replacing it while checking the ther-
mometer as it is also hermetically sealed with the thermal
system.
Torque Values (in.-lbs.)
Valve Size
1½” - 2”
Valve Body Material
Bronze
Carbon Steel, Stainless Steel,
Ductile Iron
140 200