Jordan Valve Mark 68HP User Manual

I & M 68HP

3170 Wasson Road • Cincinnati, OH 45209 USA

Phone [phone] • Fax [phone]

E-Mail: [e-mail] • www.jordanvalve.com

Warning: Jordan Valve products must only be used, installed, and repaired in accordance with these Installation & Maintenance
Instructions. Observe all applicable public and company codes and regulations. In the event of leakage or other malfunction, call
a qualified service person; continued operation may cause system failure or a general hazard. Before servicing any valve,
disconnect, shut off, or bypass all pressurized fluid. Before disassembling a valve, be sure to release all spring tension.

Please read these instructions carefully!

Your Jordan Valve product will provide you with long, trouble­free service if it is correctly installed and maintained. Spending
a few minutes now reading these instructions can save hours
of trouble and downtime later. When making repairs, use only
genuine Jordan Valve parts, available for immediate shipment
from the factory.

IDEAL INSTALLATION SCHEMATIC

Main Steam Line

5

3

Condensate Return Line

1 Shut Off Valve
2 Pipe Union
3 Strainer/Drain Valve
4 Pressure Gauge
5 Jordan MK68HP Pressure Regulator
6 Relief Valve
7 Steam Trap

4

1

22

1

By-Pass Line

1

4

1

5
R

Installation & Maintenance Instructions for

Mark 68HP High Pressure Regulators

INSTALLATION

1. To protect the regulator from grit, scale, thread chips, and
other foreign matter, all pipe lines and piping components
should be blown out and thoroughly cleaned before the regu­lator is installed.

2. Shutoff valves, pressure gauges, and bypass piping should
be installed as indicated in the Ideal Installation Schematic
to provide easier adjustment, operation and testing.

3. When preparing threaded pipe connections, care should be
exercised to prevent pipe sealing compound from getting into
the pipe lines. Pipe sealing compound should be used spar­ingly, leaving the two lead threads clean. Jordan Valve uses,
and recommends, thread sealer Teflon ribbon.

4. A line strainer should be installed on the inlet side of the
regulator to protect it from grit, scale, and other foreign matter.
A .033 perforated screen is usually suitable. Line strainers
are available from Jordan Valve.

5. Install the regulator in the highest horizontal line of piping to
provide drainage for the inlet and outlet piping, to prevent
water hammer, and to obtain faster regulation.

6. The flow arrow on the regulator body must be pointed in the
direction of flow. The regulator may be installed vertically or
horizontally without affecting its operation.

7. For best control, 3’-0” straight sections of pipe should be in­stalled on either side of the regulator.

8. In hot vapor lines, upstream and downstream piping near the
regulator should be insulated to minimize condensation.

9. If possible, install a relief valve downstream from the regula­tor. Set at 15 psi above the control point of the regulator.

10. For gas service, expand the outlet piping at least one pipe
size if the controlled pressure (downstream) is 25% of the
inlet pressure or less. A standard tapered expander connected
to the outlet of the regulator is recommended.

11. Where surges are severe, use a piping accumulator.

12. Operate the regulator within its rated pressure and temperature.

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

3

5

2

6 Bolts (or multiples) 8 Bolts (or multiples)

1

6

4

7

2

5

1

6

8

4

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 immedi­ate 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.

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.

When requesting a return or when ordering spare parts, first
make a note of the following information on the valve’s name­plate:

-serial number

-model number and size

-body material and end connections

-range

-seat and seal materials