Jordan Valve Mark 37 User Manual

I & M Mark 37 MV1005 / MV1010

3170 Wasson Road • Cincinnati, OH 45209 USA

Phone [phone] • Fax [phone]

[e-mail] • www.jordanvalve.com

Installation & Maintenance Instructions for Mark 37

Electric Control Valve with MV1005/MV1010 Motors

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.

Please read these instructions carefully!

should be exercised to prevent pipe-sealing
compound from getting into the pipelines. Pipe-

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.

sealing compound should be used sparingly,
leaving the two end threads clean. Jordan uses,
and recommends, thread sealer Teon ribbon.
Install the valve in the highest horizontal line of 5.
piping 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.

Ideal Installation

pointed in the direction of the ow. The valve may
be installed in any direction, but damage to the

Main Line

seating surfaces may occur if installed in a vertical
line with the ow upwards.

Electrical Connection

3

4

1

1

5

2

By-Pass Line

1

2

4

6

R

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 8.
the regulator. Set at 15 psi above the control point
of the valve.
Expand the outlet piping at least one pipe size if 9.
the downstream pressure is 25% of the inlet pres­sure or less. A standard tapered expander connect-

1. Shut off Valve

2. Pipe Union

3. Strainer and Drain Valve

4. Pressure Gauge

5. Motor Valve

6. Relief Valve

ed to the outlet of the valve is recommended.
Where surges are severe, a piping accumulator is 10.
recommended.
For best control, 3’ 0” straight sections of pipe 11.
should be installed on either side of the valve.

To protect the valve from grit, scale, thread chips 1.
and other foreign matter, ALL pipelines and piping
components should be blown out and thoroughly
cleaned before the installation process begins.
Shutoff valves, pressure gauges and by-pass piping 2.
should be installed as indicated in the Ideal Installa­tion Schematic to provide easier adjustment, opera­tion, and testing.
A line strainer should be installed on the inlet side 3.
of the regulator to protect it from grit, scale and
other foreign matter. A 0.033 perforated screen is
usually suitable for this purpose. Line strainers are
available from Jordan Valve.
In preparing threaded pipe connections, care 4.

PROTECT VALVES WITH LINE STRAINERS

Wiring

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

Make all wiring connections in accordance with local
regulations and national codes. Use No. 18 wire or larger
for all connections to the motor. No. 14 wire should be
used on runs over 500 feet long. When wiring in conduit
with other wires, motor actuator wires must have insula­tion equal to the other conductors in the conduit run. All
splices are to be made in junction boxes using approved

solderless connectors or by soldering and then taping
the connections. For specic wiring instructions based
on your control range and command signal, see Supple­mental Motor Literature supplied with your valve upon
shipment.

Start-Up

A. DISASSEMBLY

The sliding gate 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.

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 shut off the line uid, close the inlet shutoff 3.
valve rst, then the outlet shutoff 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 the inlet shutoff valve.1.
Allow pressure to bleed off through downstream 2.
piping. Do not attempt to reverse the valve by
bleeding pressure from the upstream side of the
valve.
When the pressure gauges indicate that all pres-3.
sure 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

Valve Plate

Index Pin

Cap Screws

Valve Disc

Disc Guide

Cap

Hex Nuts (2)

Studs (2)

Disc Pin

Body

Close the shutoff valve on each side of the control 1.
valve, and remove the valve from the line.
Note the scribes “<” on the side of the valve body 2.
and cap. Secure the body 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 3.
stamped arrow. This arrow points to the “<“ on the
body. (Certain disc that can be rotated 180° with­out affecting valve stroke may not have an arrow.)
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.
Clean all the parts, body, and cap with solvent. 4.
Place 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 re-lap
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 5.
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 plate in the body, lapped surface facing 1.
the cap. The index pin hole should be on the same
side of the body as the “<” on the body. Align the
disc pin so that it is centered in the body bore and
that it protrudes through the center slot in the valve
plate (this should be the longer of the two exten­sions if the disc pin is cast).
Place the valve disc on the valve plate, engaging 2.
the disc pin. The arrow on the disc should point to
the index pinhole. Insert the index pin in the hole.
Place the disc guide onto the valve plate, engaging 3.
the index pin. Rotate the assembly slightly until the
slot openings in the disc are parallel to the open­ings in the plate and perpendicular to the 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.

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