Jordan Valve Mark 52 Series – Internally Piloted Regulator - Manual (Page 4)

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pilot tube.
Valve is now ready for installation and start up.
16.
Trouble Shooting
Erratic control
Oversizing causes cycling and hunting and reduces •
the rangeablility of the valve. Make certain that your
sizing is correct.
Excessive foreign matter on seats.
•
Valve stroke out of adjustment. Check and readjust •
if necessary.
Valve disc may not be moving freely. Check disc
•
guide clearance.
Will not operate
Diaphragm ruptured. •
Improper spring setting. •
Upstream pilot tube clogged. •
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 Values
For bolt #11, see Illustration and Parts List on last page.
Valve Size Torque in. / lbs.
1/2” & 3/4” 110
1” & 1-1/4” 120
1-1/2” 140
2” 140