Jordan Valve Mark 33 User Manual

I & M Mark 33 Series

3170 Wasson Road • Cincinnati, OH 45209 USA

Phone [phone] • Fax [phone]

[e-mail] • www.jordanvalve.com

Warning: Jordan Valve electric motor control valves 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 qualied service person; continued operation may cause system
failure or a general hazard. Before servicing any valve, disconnect, shut off, or bypass all pressurized uid. Before
disassembling a valve, be sure to release all spring tension.

Installation & Maintenance Instructions for

Mark 33 Electric Motor Control Valves

Please read these instructions carefully!

Your Jordan Valve product will provide you with long,
trouble-free 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

Main Line

Electric

3

4

5

2

1

Bypass Line

1 Shut-off Valve
2 Pipe Union
3 Strainer & Drain Valve
4 Pressure Gauge
5 Motor Valve
6 Relief Valve

Connection

1

2

4

R

6

should be used sparingly, leaving the two lead threads
clean.
A line strainer should be installed on the inlet side of 4.
the regulator to protect it from grit, scale and other
foreign matter. A 0.033 perforated screen is usually
suitable. Line strainers are available for immediate
shipment from Jordan Valve.
Install the valve in the highest horizontal line of pip-5.
ing to provide drainage for inlet and outlet piping, to
prevent water hammer and to obtain faster response.
The ow arrow on the regulator body must be 6.
pointed in the direction of ow. The valve may be
installed in any direction, but damage to the seating
surfaces may occur if installed in a vertical line with
the ow upwards.
To minimize condensation in hot vapor lines and to 7.
protect the motor from excessive heat, piping near
the valve should be insulated.
If possible, install a relief valve downstream from the 8.
regulator. Set at 15 psi above the control point of the
valve.
Expand the outlet piping at least one pipe size if the 9.
downstream pressure is 25% of the inlet pressure or
less. A standard tapered expander connected to the
outlet of the valve is recommended.
Where surges are severe, a piping accumulator is 10.
recommended.
For best control, 3’ straight sections of pipe should 11.
be installed on either side of the valve.

Installation

To protect the valve from grit, scale, thread chips, 1.
and other foreign matter, all pipe lines and piping
components should be blown out and thoroughly
cleaned before the valve is installed.
Shutoff valves, pressure gauges, and bypass piping 2.
should be installed as indicated in the diagram to

provide easier adjustment, operation, and testing.
In preparing threaded pipe connections, care should 3.
be exercised to prevent pipe sealing compound from
getting into the pipe lines. Pipe sealing compound

Wiring

Caution: Disconnect electrical power supply before
wiring motor into circuit to avoid electrical show or
possible damage to equipment. Always disconnect
power supply before attempting any wiring changes.

See the Motor Manufacturer’s literature, supplied with
the valve, for wiring connections and instructions.

Start-Up

Be sure that the action of the control valve and of 1.
the controller are such as to give the desired results.
With the inlet, outlet and bypass shutoff valves 2.
closed, and no pressure in the downstream line, fully
open the outlet shutoff valve. Slowly open the inlet
valve just enough to start ow through the control
valve. Increase ow gradually by slowly opening the
inlet shutoff valve. Do not fully open the inlet valve
until you are sure that the controller and control
valve have control of the system. Usually the hand­wheel on the inlet valve will turn freely when this
point is reached.
To shutoff the line uid, close the inlet shutoff valve 3.
rst, then the outlet shutoff valve.

Close the shutoff valve on each side of the control 1.
valve, and remove the valve from line.
Note scribed “<” on the side of the valve body and 2.
cap. Secure the body outlet ats in a vise. Remove
the cap bolts and two nuts, and lift the cap straight
up.
Before removing, check the valve disc for a stamped 3.
arrow. This arrow points to the “<” on the body.
Remove the disc guide and the valve disc. Place the
valve disc on the bench with lapped surface facing
up. Protect the lapped surfaces on both sides of the
disc guide.

It is imperative that the disc pin is not rotated
when disassembling, cleaning or reassem­bling, since this affects the stroke adjustment
of the valve.

Maintenance

Caution: Make certain that there is no pressure in the
valve before loosening any ttings or joints. The fol­lowing steps are recommended:

Close inlet shutoff valve.1.
Allow pressure to bleed off through downstream 2.
piping. Do not attempt to reverse the ow through
the valve by bleeding pressure from the upstream
side of the valve.
When the pressure gauges indicate that all pressure 3.
has been removed from the system, close the outlet
shutoff valve and the valve may be serviced.

Note: refer to the drawing at the end of this docu­ment for description and proper orientation of parts.

Valve Seats

Disc Pin

Index Pin
Cap Screws

Hex Nuts

Body

Studs

Valve Plate

Valve Disc

Disc Guide

Cap

A. Disassembly

The seats of Jordan valves are precision-lapped. Main­taining such tolerances is of paramount importance for
your assurance of excellent control and tight shutoff. Do
not use metallic objects in removing the seats. Care in
handling is imperative.

Lightly tap on the body to remove the valve plate. 4.
Invert the body, let valve plate drop out into your
hand, and place it on the bench with lapped surface
facing up.
Clean all the parts, body and cap with solvent. Place 5.
a piece of 4/0 polishing cloth or jewelers cloth on
a smooth, at surface such as surface plate, and
polish the lapped seating surfaces of the disc, plate
and disc guide using a “gure 8” motion. If the parts
are scarred, do not attempt to relap them, but return
them to the factory for repair or replacement. If the
seats are not scarred deeply, they can be repaired at
a nominal cost.
The vertical sections of the disc guide serve as 6.
guides for the valve disc while stroking. A 0.005
feeler gauge should be used to check for clearance
between this surface and the side of the valve disc. If
the clearance is less, clean the guide surfaces in the
disc guide with a ne le.

B. Reassembly

Place the valve plate in the body, lapped surface 1.
facing the cap. The index pin hole should be on the
same side as the “<” on the body. Align the disc pin
so that it is centered in the body bore and protrudes
through the center slot in the valve plate.
Place the valve disc on the valve plate, engaging the 2.
disc pin. The arrow on the disc should point to the
“<” on the body.
Place the disc guide onto the valve plate, engaging 3.
the index pin. Rotate the assembly slightly until the
slot openings in the valve disc are parallel to the
openings in the valve plate, and perpendicular to the
valve stem. Stroking the valve will aide in this align­ment.
Align the “>” on the cap with the “<” on the body, 4.
and place the cap over the two studs in the body.
Install the nuts and cap bolts. Tighten uniformly. See 5.
torque requirements and tightening procedures.