Jordan Valve Mark 68HP Series – High Pressure Regulator - Manual (Page 2)

Torque Procedure Troubleshooting
1. Install all bolts hand-tight.
2. Torque the bolts in order of the bolt pattern to 75 in-lbs.
3. Re-torque each bolt to 300 in-lbs (25 ft-lbs) using the same
bolt pattern as shown.
Bolt Pattern/Torque Sequence
3
1
6 4
2
5
1
8
4
6
2
7
3
5
6 Bolts (or multiples) 8 Bolts (or multiples)
Ordering Spare Parts & Repairs
Jordan Valve products are ruggedly built, carefully assembled to
accurate dimensions, and individually tested for performance. A
complete stock of finished parts is maintained ready for immedi-
ate shipment.
If desired, Jordan Valve will promptly repair all regulators at a
reasonable cost. To return a valve for inspection and/or repair,
please contact our customer service department for a Return
Authorization Number. Telephone toll-free 1-800-543-7311
(within the USA) or 1-800-354-0305 (from Canada). If preferred,
you can fax us at 513-871-0105.
When requesting a return or when ordering spare parts, first
make a note of the following information on the valve’s name-
plate:
-serial number
-model number and size
-body material and end connections
-range
-seat and seal materials
SYMPTOM- ERRATIC CONTROL
POSSIBLE CAUSE AND CURE:
Oversizing causes cycling and hunting and reduces the
rangeability of the valve. Make certain that your sizing is correct.
Steam traps downstream may need attention.
Safety valve may be jammed open. Repair as necessary.
Excessive foreign matter on seat (4) or plug seat (3). Clean them.
Inspect seating surfaces for deterioration.
Valve trim may not be moving freely. Check for any parts that
may be binding.
SYMPTOM: DOWNSTREAM PRESSURE BUILD-UP
POSSIBLE CAUSE AND CURE:
Seats deteriorated. Replace.
Inspect for foreign matter between the seat (4) and plug seat (3).
Valve trim may not be moving freely. Check for any parts that
may be binding.
SYMPTOM: CANNOT MAINTAIN REGULATED PRESSURE
POSSIBLE CAUSE AND CURE:
Clogged strainer or lines. Clean.
Inlet pressure too low.
Spring (15) set too low or broken. Reset or replace.
Valve is undersized for rated flow. Recheck sizing.
System demand exceeds capacity. Recheck sizing.