Jordan Valve Mark 80 Series – Self Operated Temperature Regulator - Manual (Page 4)

valve by inserting seats as outlined in Valve Assem-
bly Section for the size valve you are working with.
Then follow the instruction for seat alignment.
Thermal System
The thermal system is a hermetically sealed unit 1.
consisting of a sensing bulb, capillary tubing, pro-
tective armor, and actuator assembly. This unit con-
tains the thermostatic charge that operates the TCV.
Please do not tamper with it. In case the charge
is lost, the thermal 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 2.
releasing the spring compression (by rotating the
adjusting wheel downwards) and removing the four
filister head actuator screws (7Y). Do not remove
the adaptor plate (4A) as this will allow excessive
stroking of the specially formed diaphragm, thereby
causing malfunction. To reassemble, merely place
the new thermal system onto the yoke (1Y) and
reinsert the four actuator screws. The valve stroke
adjustment will not be affected if the steps are fol-
lowed carefully.
Valve Stroke Adjustment
If the temperature regulator requires a stroke adjustment
after maintenance on one of the above points, follow
these procedures.
A. Direct Acting
Make sure that the actuator stem is stroked fully 1.
upwards by the spring.
Loosen the locknut (8V) and the stem connector 2.
bolt (12Y) but do not remove the connector assem-
bly (10Y).
Install the plate and disc in the valve body follow- 3.
ing the procedures outlined under VALVE SEATS.
Orifices of the disc and plate must perfectly align
in the full open position. Loosen the stem locknut
(8V) and adjust the position of the disc on the plate
by rotating the valve stem (9V) (clockwise to raise
and counter clockwise to lower) until the seats are
in the fully opened position.
Note: The stem will rotate in the stem connector if the
connector bolt is loosened slightly. Proper positioning of
the valve stem and actuator stem must be maintained
during adjustment of the seats.
B. Reverse Acting
Make sure that the actuator stem is stroked fully 1.
downwards. Loosen the spring completely and pull
down on the stem or heat the bulb so that the ac-
tuator moves the stem downward. Then, follow the
procedures 2 and 3 under Direct Acting above.
After perfect alignment is obtained, tighten the stem
connector bolt and nut (11Y, 12Y) and the locknut (8V)
Ordering Spare Parts
Use only genuine Jordan Valve parts to keep your valve
in good working order. So that we can supply the parts,
which were designed for your valve, we must know ex-
actly which product you are using. The only guarantee to
getting the correct replacement parts is to provide your
Jordan Representative 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 determined using the following informa-
tion: Model Number, Valve Body Size, Seat Material and
Cv Rating, Spring Range and Set Point, Trim Material, Part
Name - Number and Quantity.
NOTE: Any parts ordered without a valve serial number
that are found to be incorrect are subject to up to a mini-
mum 25% restock charge when returned.
Torque Requirements
5 3
1
6
4
2
5
3
1
6 4
2
7
8
6 bolts
(or multiples)
8 bolts
(or multiples)
Valve Size
Body Material
Cast Iron
Ductile Iron
Bronze
Cast Steel
Stainless Steel
1/2” & 3/4” 140 in.-lbs. 200 in.-lbs.
1” & 1-1/4” 140 in.-lbs. 200 in.-lbs.
1-1/2” & 2” 140 in.-lbs. 200 in.-lbs.