Jordan Valve Mark 33 Series – Boiler Feedwater Control Valve - Manual (Page 3)

7. Engage the valve stem and actuator stem with connector.
Tighten connector nut and bolt. No stroke adjustment is
required.
Valve Stroke Adjustment
The valve stroke is set at the factory and no field adjustments
are necessary. The position of the seats can be adjusted by
starting from the normally open position (when the orifice in
the plate and in the disc are perfectly aligned.) For direct
acting service, adjust the motor rotation to the full CCW
position (as viewed from the power end.) For reverse acting
service, adjust the motor rotation to the CW position. If the
seats are not properly full open, loosen the nut that locks the
actuator stem to the rod end bearing and loosen the stem
connector assembly just enough to rotate the actuator stem.
Carefully thread the actuator stem in or out of the rod end
bearing until the seats are full open. If further adjustments are
necessary, consult factory.
Motor Replacement
If it becomes necessary to change motors, the following
procedure should be followed:
1. Remove the valve from the line.
2. Remove socket head screw and lockwasher.
IMPORTANT — Note position of lobe of the cam on the
motor shaft. Do not attempt to remove the socket set
screws.
3. Remove the four motor mounting bolts, lockwashers, and
nuts.
4. Slide motor back off of mounting plate.
5. Install new motor on mounting plate. IMPORTANT —
make sure cam is in the same lobe position as de-
scribed in step 2.
6. Replace and tighten mounting bolts, lockwashers, and
nuts.
7. Replace and tighten socket head screw and lockwasher
on motor shaft.
8. Check valve stroke as described in STROKE
ADJUSTMENT.
Motor Maintenance
The drive motor and gear train are immersed in oil and sealed
in a die cast enclosure, and thus, periodic maintenance is not
required.
Field repairs must not be made.
Replacement actuators may be obtained through the nearest
Jordan Valve representative. When ordering a replacement
actuator, specify product model number and serial number as
shown on the valve nameplate.
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:
Electrical power may be off or there may be a loose
connection.
There could be a defective control device.
The motor actuator may be defective and require
replacement.
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. By furnishing the following information with
your order, you will help prevent delays and errors:
• Serial number of your existing valve
• Model number
• Body size
• Body material
• End Connections (flange rating if applicable)
• Part name and quantity (see chart on back page).
Torque Values (in.-lbs.)
6 bolts
(or multiples)
8 bolts
(or multiples)
VALVE SIZE
VALVE BODY MATERIAL
CI or BRZ DI, CS, SS
1/4" & 3/8" 70 150
1/2" - 2" 140 200